# COMMENTARY: THE AMERICAN SENATE TRIES TO REIN IN TRUMP AND THE WAR — TENTH ACT

> On June 23, 2026, the United States Senate adopts a War Powers resolution on Iran by 50 votes against 48. Four Republican senators join Democrats to demand either the conclusion of American military engagement in Iran or a formal authorization from Congress to continue it. This i

- Author: Maxime Marquette
- Publisher: MadMax (https://mad-max.co)
- Section: Commentary
- Published: 2026-06-24
- Canonical URL: https://mad-max.co/en/article/commentaire-le-senat-americain-tente-d-encadrer-trump-et-la-guerre-dixieme-acte

## Introduction: June 23, 2026, a divided Senate says stop to presidential war

### 50 votes against 48: the arithmetic of a fragile rebellion

On **June 23, 2026**, the **United States Senate** adopts a **War Powers resolution** on **Iran** by **50 votes against 48**. Four Republican senators join Democrats to demand either the conclusion of American military engagement in Iran or a formal authorization from **Congress** to continue it. This is the first time in American history — since the creation of the **War Powers Act** in **1973** — that both chambers of Congress have approved a concurrent resolution ordering a president to end military hostilities. This is not a procedural curiosity. It is a major constitutional event, however discreet it may be in the media noise of a week dominated by the Iranian deal and the quantum orders.

The House of Representatives had adopted a similar resolution a few weeks earlier — it is this "10th" passage under the heading of the **War Powers resolution** that creates the historical event: ten legislative attempts to constrain **Trump** on this file, until two chambers together produced a formal result. This **Senate** vote is the result of months of accumulated frustration in the corridors of the Capitol — frustration at a war started without **Congressional** authorization, prolonged without Congressional authorization, and apparently in the process of being concluded without Congressional authorization. Trump acted as if Congress were a sounding board, not a co-deciding constitutional actor in the conduct of war.

### What the War Powers Act says — and does not say

The **War Powers Resolution of 1973** is a law designed to rebalance the relationship between the executive and legislative branches on war decisions, after the excesses of the Vietnam War. It requires the president to inform **Congress** within 48 hours of any engagement of American armed forces in hostilities. It requires the end of hostilities within **60 days** if Congress has not voted a formal authorization — unless Congress is incapable of meeting. It allows Congress to order the withdrawal of forces by concurrent resolution of both chambers. This last mechanism is precisely the one that the House and the **Senate** have just activated on **June 23, 2026**.

But here is the constitutional knot: a concurrent resolution is not a law. It does not require the president's signature. It therefore cannot be opposed to a presidential veto. Its legal status is contested: in 1983, the **Supreme Court** invalidated the legislative veto mechanism in the decision **"INS v. Chadha,"** which leads some legal scholars to argue that the **War Powers** concurrent resolution mechanism is itself unconstitutional. In this context, **Trump** can legally ignore this resolution — and his legal advisors will probably tell him to do so. What the June 23 vote creates is therefore not a legal constraint. It is a political constraint.

*A vote that is not legally binding. Four Republicans breaking ranks. A historic precedent that has no precedent. I wonder what the Founding Fathers — who drafted the Constitution precisely to prevent the concentration of the war power in a single hand — would think of an America that has been at war for months without its Congress having ever voted for or against it. That is the kind of question American democracy would need to ask itself collectively, not just in procedural arcana in the Senate.*

## The four rebel Republicans: who they are and why it matters

### The geography of dissent: key states, complex political calculations

The precise identities of the four Republican senators who voted for the **War Powers resolution** on **June 23, 2026** are not yet fully documented in available sources at that date. But their existence as a group is a politically significant fact that deserves analysis. In a **Republican Party** of **Trump**'s second term, where loyalty to the president has become virtually a condition of internal political survival, breaking ranks on a War Powers vote — a vote about war, presidential power, and the Constitution — represents a risky calculation for any Republican senator.

Several categories of Republican senators have historically shown a propensity to deviate from the Trumpian consensus on questions of war: those representing states with strong libertarian traditions (reluctant to open military interventions), those with personal military backgrounds and therefore sensitive to constitutional questions about war authorization, and those who calculate that heading into 2028, an image of moderate independence may be worth more than unconditional loyalty to a president who cannot be reelected. These motivations are likely all present in the group of four. What is certain is that they made a political choice that will have consequences in their relationships with the **White House**.

### The symbolic scope of a 50-48 vote: neither victory nor defeat

The **50-48** vote is instructive precisely because it is tight. Had it been 55-45, it would have signified a real internal rupture in the **Republican Party** on the war with **Iran**. At 50-48, with four Republicans, it is more a signal of discomfort than an internal revolution. Democrats all voted for the resolution — that was expected. The four Republicans represented the critical margin. Without them, the vote would have been 46-52 in favor of maintaining the presidential position. With them, the vote flipped.

What this vote says about Republican opinion on the war with **Iran**: an overwhelming majority of the party still supports **Trump** on this file. But a significant minority — four out of fifty, or 8% of Republican senators — is sufficiently concerned by either the constitutional dimension, the management of the Iran file, or polling in their states, to take the symbolic step of a vote against the presidential position. This minority is too small to legally constrain Trump. It is visible enough that the **White House** must take it into account in managing the Iran file in the weeks ahead.

*Four Republicans. In any other period of recent American history, this would be ordinary. In the Republican Party of Trump's second term, it's almost heroism. Or perhaps simply very precise political calculation. Hard to know. What is certain is that these four senators said: there is a limit. And the fact that they said it, even at 50-48, even without legal force, says something about America's constitutional health. That health is not dead. It is under pressure. But it is not dead.*

## The war with Iran: a war without a vote, without definition, without a clearly articulated end

### Chronology of a war that never said its name

The war between the **United States** and **Iran** began on **February 28, 2026** with American-Israeli strikes on Iranian nuclear and military installations — that is the date cited in the Reuters/Ipsos poll of **June 23, 2026**, confirmed by multiple sources. It lasted about four months before the memorandum of understanding of **June 17** created a pause. During those four months, the **United States** conducted continuous military operations against a sovereign state without **Congress** ever having voted a formal **Authorization for Use of Military Force (AUMF)**. **Trump** invoked his inherent constitutional authority as commander-in-chief and, possibly, previous AUMFs — notably that of 2001 (counterterrorism) or 2002 (Iraq) — in expansive interpretations that his legal adversaries contest.

This situation is not entirely without precedent. **Barack Obama** conducted strikes in Syria and Libya without clear legislative authorization. **Bill Clinton** struck Iraq and Yugoslavia without an **AUMF**. The difference with the **Trump**-**Iran** war of 2026 is the scale and duration. Isolated strikes without authorization are one thing. Four months of war against a state of 87 million people, with human casualties, global economic disruption via the **Strait of Hormuz**, and a permanent nuclear threat — that is a different category. And it is precisely this difference of scale that ultimately provoked the rebellion in **Congress**.

### The executive argument: national security cannot wait

The **Trump** administration defended its position with two main arguments. First, the speed required by national security imperatives — in an imminent nuclear crisis, waiting for a **Congressional** vote can mean giving the adversary time to disperse its critical assets or escalate. Second, precedent: since 1973, no president has truly respected the constraints of the **War Powers Act** in situations of significant conflict. The Reagan administration in **Grenada** in 1983, the Bush father administration in **Panama** in 1989, **Clinton** in **Kosovo** in 1999 — all acted before or without formal Congressional authorization.

These arguments are not without force. The Iranian nuclear question did genuinely have an urgency dimension: if Tehran had completed its weapons program during the delays of a legislative process, military options would have been considerably reduced. But this argument justifies the initial strikes — not four months of continuous war. At some point, the urgency of the initial action transforms into a prolonged war requiring the democratic legitimacy of a vote. This tipping point was never formally reached according to the administration. **Congress**, however, determined it had been — and voted.

*I wasn't there when the United States decided to strike Iran. Nobody outside knows exactly what intelligence led to that decision, in what timeframe, with what degree of inevitability. Perhaps striking was necessary. Perhaps the nuclear threat was imminent. But I know this: four months later, without a Congressional vote, with a poll showing only 24% of Americans think it was worth the cost — the question is no longer whether it was necessary. The question is who decides it's necessary. And in a democracy, that answer should include elected representatives.*

## The history of the War Powers Act: a law nobody ever really respected

### 1973: Congress reclaims power after Vietnam

The **War Powers Resolution Act of 1973** was born of accumulated historical frustration. The **Vietnam** War — conducted under **Johnson** and **Nixon** administrations, gradually escalated over a decade without a formal declaration of war vote — had cost more than **58,000 American lives** and provoked a profound political legitimacy crisis in the **United States**. **Congress**, in adopting this law, sought to reclaim a share of the constitutional control over the war decision that the executive power had progressively monopolized since World War II. Nixon had vetoed this law — Congress had adopted it with a two-thirds majority override.

Since 1973, the law has never been fully respected by any president of either party. Republican administrations have generally maintained that the **War Powers Act** was unconstitutional because it encroached on the president's commander-in-chief prerogatives. Democratic administrations have tended to respect it formally — reporting to **Congress** within 48 hours — while circumventing its **60-day** limitation through creative reinterpretations. What the vote of **June 23, 2026** creates anew is the first use of the two-chamber concurrent resolution mechanism to order the withdrawal of forces — a theoretical mechanism never used in the history of the law.

### The 1983 INS v. Chadha decision: the constitutional vacuum

In **1983**, the **Supreme Court** invalidated in the case **"INS v. Chadha"** the legislative veto mechanism — the capacity of one or two chambers to annul an executive decision without going through the full legislative process (vote of both chambers plus presidential signature). The decision created an area of constitutional controversy about the **War Powers** concurrent resolution mechanism: if this mechanism is itself a form of legislative veto, it could be invalidated by the same principles of **"Chadha."** This is the legal argument that **Trump**'s administration lawyers will probably use to declare the vote of **June 23, 2026** non-binding.

The Supreme Court — with its current composition, mostly conservative and favorable to executive prerogatives — would probably not rule against the administration on this point. Which means that the **War Powers resolution** of **June 23, 2026**, however historic it may be on the symbolic level, will likely remain without direct legal effect. This is an uncomfortable truth for those who celebrate it as a return to constitutionalism. It is real, and it deserves to be named.

*A law adopted in 1973. A constitutional void deepened by a 1983 decision. A resolution voted in 2026 that everyone knows is not legally binding. And yet, those fifty senators standing to vote — forty-six Democrats, four Republicans — did something real. They said: we exist. We have a voice on war. It counts. Even if it is not legally binding, it binds politically. And in a democracy, political constraints always eventually find their way to legal constraints. It just takes time.*

## Trump's reaction: institutional contempt as signature

### Presidential treatment of the resolution: silence and circumvention

**Trump** did not directly comment on the **Senate War Powers resolution** in his speech of **June 23**. This is a significant silence. When Trump wants to fight a decision — from a judge, from **Congress**, from an ally — he goes on **Truth Social** within the hour and attacks by name. The silence on the War Powers resolution probably means one of two things: either his lawyers advised him not to respond on the substance so as not to create rhetorical precedents that could be used against him in a potential legal challenge, or he considers the question too procedural to deserve his public attention.

In both cases, the silence says this: **Trump** does not recognize this resolution as having sufficient legitimacy to merit a response from him. This is precisely the behavior that the **War Powers Resolution** aimed to prevent — a president who ignores **Congress** on questions of war. The bitter irony is that the 1973 law lacks the teeth to force Trump to take it into account. What remains is political and historical judgment. And that judgment, Trump cannot veto.

### The administration facing Congress: an increasingly strained relationship

The **War Powers resolution** of **June 23, 2026** is part of a broader dynamic of growing tensions between the **White House** and the Republican **Congress**. On several files — tariffs, the **defense budget**, the nomination of certain agency directors — cracks have begun to appear in the façade of Republican unity. The War Powers vote is not an isolated accident. It is the visible symptom of an accumulation of frustrations in a Congress that feels systematically short-circuited by a White House that prefers governing by executive orders and presidential authority rather than through the legislative process.

This tension has a concrete impact on governability. If four Republican senators voted against **Trump** on the war with **Iran**, it is plausible that others — perhaps the same ones, perhaps others — will vote against Trump on other files in the coming months: debt, tariffs, tax reforms. The **Republican Party** is not monolithic. It contains **libertarians**, defense hawks, economic pragmatists, **isolationists**, and pure Trumpists. All these currents coexist under the same label. And the June 23 vote revealed that coherence is not as absolute as previously assumed.

*The Trump-Congress relationship reminds me of someone who absolutely must work with a partner they hold in contempt. Both need each other — Trump needs Congress for his budgets and laws, the Republican Congress needs Trump for its electoral base. But the mutual distrust is real, and it produces moments like June 23: a vote that changes nothing legally but says everything about a fractured relationship.*

## What this changes for Trump's Iran policy

### The 60 days under increased parliamentary pressure

The memorandum of understanding of **June 17, 2026** provides for **60 days** of negotiations to produce a final agreement. These 60 days will expire around **August 17, 2026**. The **War Powers resolution** of **June 23** modifies the political context of these negotiations in two ways. First, it sends Tehran the signal that domestic American support for a resumption of strikes is not unlimited — which could encourage **Iran** to play for time and wait for domestic American pressure to make a military resumption politically costly for **Trump**. Second, it creates for Trump an additional incentive to conclude a deal — even an imperfect one — to prevent the War Powers debate from intensifying if negotiations collapse and he must decide whether to resume strikes.

This last point is perhaps the most important. If August 17 arrives without a final agreement and **Trump** decides to resume strikes, he will have to do so in a context where the **Senate** has just adopted a resolution asking him not to. Even if not legally binding, this resolution creates a rhetorical precedent — Trump did not follow **Congress**'s advice, he acted unilaterally. In a future Republican electoral campaign or in the archives of American constitutional history, this precedent will carry weight.

### The risk of a rushed deal under political pressure

There is a parallel risk, perhaps more immediate: that the pressure from the **War Powers** vote, combined with polls showing that **63% of Americans** doubt the durability of the deal according to Reuters/Ipsos of **June 23**, pushes **Trump** to prematurely conclude a final agreement that does not address structural problems — ballistic missiles, proxies, residual nuclear program. A deal botched under political pressure would be precisely the scenario that the **FDD** dreads in its analysis of **June 23, 2026** on **General License X**: **Iran** obtains the economic means to reconstitute itself without having genuinely abandoned its regional destabilization capabilities.

The tension is therefore real between two risks: resuming strikes without authorization and facing growing constitutional opposition, or concluding a fragile deal under pressure and leaving a weakened but unresolved **Iran** as a problem for the next administration. Both risks are documented. Neither is a costless option. This is the dilemma that the June 23 vote crystallizes — and that no presidential victory speech can resolve.

*The 60 days will pass. And at the end of those 60 days, Trump will have to choose. Either a deal he can sell as a victory even if his conservative partners at the FDD and elsewhere judge it insufficient. Or the resumption of strikes, with this June 23 vote at his back. That is not a comfortable position, even for someone who normally governs in discomfort as if it were home. I would prefer he choose strategic patience over haste. But I have no say in that choice. Neither do most Americans, fundamentally. That is precisely the problem.*

## The historical dimension: a democracy searching for itself

### The War Powers Act, fifty years on: necessary but insufficient

Fifty-three years after its adoption, the **War Powers Act** has still not managed to satisfactorily balance the **war power** between the executive and legislative branches. It has created a formal framework that imposes procedural obligations — reporting to **Congress** — without imposing substantive obligations — cessation of hostilities. Its concurrent resolution mechanism has been constitutionally dubious since **Chadha** in 1983. And its **60-day** provisions have never been formally tested before the Supreme Court because no president has ever let the situation go that far.

This legal vacuum is not a technical defect repairable by a minor amendment. It reflects a fundamental tension inscribed in the American constitution itself between two contradictory principles: the necessity of unity of command in a crisis (which favors the executive), and the necessity of democratic legitimacy for an act as grave as war (which favors the legislative). The constitution never resolved this tension — it maintained it in an unstable equilibrium that every crisis reopens. The war with **Iran** in 2026 is the latest manifestation of this tension.

### The June 23 precedent: small step for a resolution, large step for a practice

Even if the **War Powers resolution** of **June 23, 2026** has no direct legal effect, it creates a precedent in American political practice. For the first time, both chambers jointly exercised the concurrent resolution mechanism provided by the **War Powers Act**. In doing so, they said: this mechanism exists, it can be activated, and we are ready to use it. Even if **Trump** ignores it this time, a future president — Republican or Democrat — will know that this mechanism was used successfully (in the procedural sense) in 2026. This imperceptibly changes the constitutional balance of power over the long term.

American constitutional historians will retain this vote. Not as a rupture — four Republican senators joining Democrats is not a rupture. But as a line drawn in the sand. A line that says: war without **Congressional** authorization has political limits, even if it does not yet have clear legal limits. And in the long evolution of American constitutional law, political limits often precede legal limits. This vote of **June 23, 2026** may be a small thing today. It is potentially a large thing tomorrow.

*I am a columnist, not a constitutional scholar. But I believe in something fundamental that this vote touches: democracy must fight for itself, actively, with every generation. The War Powers Act of 1973 was that fight for one generation. The vote of June 23, 2026 is another. Imperfect, fragile, contested — but real. And in a world where democracies look at each other with anxiety wondering whether they will hold against authoritarianisms, these small acts of institutional resistance matter.*

## What Europe and allies read in this vote

### The signal to allies: America controls itself, sometimes

For allied partners of **NATO** and elsewhere who watch **Washington** with anxious vigilance, the **War Powers** vote of **June 23, 2026** sends an ambiguous signal. On one hand, it confirms that the American **Congress** can still resist a president who governs by decrees and presidential authority. It shows that the American system of checks and balances is not dead — it is under pressure, but it resists. On the other hand, it confirms that this resistance is marginal — **50-48**, four Republicans, without legal effect — and that in practice, the president wages whatever war he wants, when he wants, without Congress having any real say.

For governments like **France** or **Germany** that need the approval of their respective parliaments to engage military forces, the American situation is both familiar in its executive-legislative tensions and radically different in the absence of a binding mechanism. When an American ally must decide whether or not to accompany the **United States** in a military action, it would like to know that this action has been democratically validated. This June 23 vote says that this validation is far from guaranteed in the current American system — even for a four-month war.

### The signal to Russia and China: democracy under tension

**Russia** and **China** read this **War Powers** vote and probably draw two conclusions. First conclusion, reassuring for them: American democracy is fractured on its own war decisions — which means that American resolve to support **Ukraine** or defend Taiwan could be eroded by similar internal debates. Second conclusion, more uncomfortable for them: despite these fractures, the American **Congress** did not manage to stop the war with **Iran**. Which means that even a divided democracy can wage a four-month war against a sovereign state without its own institutions succeeding in stopping it. This is a signal of power as much as of dysfunction.

This paradoxical lesson — American democracy can be fractured and powerful simultaneously — is one of the elements most difficult to integrate for authoritarian regimes that operate according to the logic of unitary decision and the absence of institutional contradiction. They see the chaos, and they conclude weakness. They forget that this chaos produced, in the end, a war that considerably weakened **Iran**. Both realities coexist — and it is precisely this coexistence that makes democracies difficult to understand and fight for their adversaries.

*Putin watches this vote and smiles. He sees a democracy fighting against itself on war. He deduces weakness. What he doesn't see — or refuses to see — is that this internal struggle is a strength. A democracy that questions the legitimacy of its wars is a democracy that still has a conscience. An autocracy that decides on a war overnight without parliamentary oversight doesn't have that conscience. And over the long term, conscience is more durable than imposed order.*

## Americans facing war: polls, memory, and legitimacy

### Only 24%: public opinion as the ultimate limit

The **Reuters/Ipsos** poll published on **June 23, 2026** — conducted on **1,262 American adults** with a margin of error of **3 percentage points** — shows that only **24%** of Americans think the war with **Iran** was worth its costs, and **50%** that it was not. These figures correspond to a documented historical relationship between American public opinion and foreign wars: initial support is often strong, but it erodes rapidly if the costs — economic (gas prices), human, and diplomatic — are not offset by clear and visible victories. The war with Iran has not yet provided these clear victories in popular perception.

These polls do not govern America — presidents sometimes do unpopular things that prove necessary in history. But they create the political context in which decisions are made. A **Trump** at **34%** overall approval and **22%** approval on cost of living — figures from the same poll — is a president whose room for maneuver for additional military decisions is narrowing. If the **60-day** negotiations with **Iran** collapse and Trump must decide whether to resume strikes, he will do so in an even less favorable opinion context than in February 2026. These figures will not paralyze him — Trump has shown many times his capacity to govern against polls. But they will weigh.

### The price of gas: the most honest barometer of public opinion

The Reuters/Ipsos poll of **June 23, 2026** explicitly notes that the price of gas for most Americans remains **considerably higher than before February 28, 2026**, despite the partial reopening of the **Strait of Hormuz**. This is the most concrete detail in the entire poll. Americans don't see their intelligence briefings on the Iranian nuclear program. They don't read the **FDD** analyses on **General License X**. But they stop at the gas pump, look at the price, and do their calculation. If this war cost them dearly at the pump and if the final agreement doesn't durably lower that price — because oil markets remain uncertain, because Iranian production takes time to return, because tensions persist — the popular legitimacy of the war will continue to erode.

This is the most direct link between war and domestic politics. And this is precisely why the **War Powers** vote of **June 23, 2026** had four Republicans rather than zero. These four senators represent states where voters fill up their gas tanks and wonder what this war did for them. Their vote was not only constitutional. It was political in the most direct sense of the term: responding to constituents who see a concrete cost and are waiting for an explanation.

*The price of gas. It's a petty indicator for a war that involves nuclear matters, the Strait of Hormuz, and regional security in the Middle East. And yet it's real. People filling their tanks this morning in Pennsylvania or Ohio don't read geopolitical analyses. They count the dollars. And when the dollars disappear faster, they look for someone to blame. Trump has always understood this. What he may not have calculated is that the war with Iran would become that culprit for part of his own coalition.*

## The state of American democratic debate: between partisanship and principle

### A War Powers debate made difficult by polarization

One of the challenges of the **War Powers** vote of **June 23, 2026** is that it is impossible to evaluate without taking into account the context of extreme polarization in which it occurs. Democrats voted for the resolution — all fifty. If **Biden** had conducted the same war against **Iran** with the same results, most of these Democrats would probably have supported it. The Republicans who voted against the resolution — the great majority of the party — may have sincere constitutional convictions, but their vote also reflects partisan loyalty. In this atmosphere, distinguishing principle from political calculation is almost impossible.

This is the curse of American constitutional debate in the **Trump** era: almost every question of principle — war, tariffs, immigration — is transformed into a partisan question, where positions change depending on who occupies the **White House**. Democrats who criticize Trump for conducting a war without **Congressional** authorization largely supported **Obama** when he conducted military operations without formal authorization. Republicans who have defended Trump often criticized Obama for the same practices. This inversion of positions according to the party of the president undermines the credibility of both camps on constitutional questions.

### June 23 as a test of American institutional health

Despite all these nuances and reservations, the vote of **June 23, 2026** says something positive about American institutional health. **Congress** used an available constitutional mechanism — imperfect, contestable, without direct legal effect — to formally register an objection to an unauthorized military engagement. This is not enough. But it is something. In a world where parliaments in other countries watch helplessly as their executives conduct wars without ever asking their opinion, the capacity of the American Congress to vote this type of resolution — even symbolic — represents a qualitative difference from authoritarian systems.

For the **West** as a whole, which watches with concern whether liberal democracies will hold against the challenges of authoritarianisms, this vote is a weak but real signal. It says: American institutions resist. Not perfectly. Not with the effects one would want. But they resist. And in the long history of democracies, that is what "holding" means: not perfection, but persistence. The **War Powers Act** of 1973 was imperfect at birth. The vote of **June 23, 2026** is imperfect in its effect. But both are acts of institutional resistance. And those acts have a value that goes beyond their immediate result.

*I end this commentary with the image of fifty senators standing to vote. Forty-six Democrats. Four Republicans. They knew their vote would not legally bind the president. They did it anyway. Because some things deserve to be said, recorded, inscribed in the archives, even when they don't immediately change the facts. That is democracy at its best moments: acting even without a guarantee of effectiveness, because silence is the real defeat.*

## The historical precedents of the War Powers Act: a law presidents have always ignored

### What this vote will change in the long term

The **War Powers** vote of **June 23, 2026** will not end the war with **Iran**. It does not legally constrain **Trump**. It does not change the polls or the price of gas. But it inscribes in American constitutional archives a precedent: both chambers of **Congress** jointly used the War Powers mechanism to order the end of a presidential hostility — for the first time since 1973. This precedent will be cited in future constitutional disputes about the **war power**. It will be invoked by future Congresses facing future presidents who conduct wars without authorization. It will progressively change the conversation about the constitutional limits of presidential war power.

For the **West** and its allied democracies, the lesson of this vote is this: democratic institutions that are not used atrophy. Every time a **Congress**, a parliament, a constitutional court exercises oversight — even imperfectly, even without immediate effect — it strengthens the institutional muscle that will be necessary to resist more serious authoritarian temptations in the future. The June 23 vote is modest. But the modesty of the act should not obscure the importance of the principle.

*History does not retain symbolic votes. It retains precedents. And this vote of June 23, 2026 is a precedent — fragile, contestable, without immediate effect. But a precedent nonetheless. Somewhere in the archives of the American Senate, it will remain: the first time both chambers said together, to a president at war, that this war needed an authorization it never received. It's little. It may be enough for the next time to change something.*

## The four Republicans and the tradition of conscience votes in the American Senate

### Rand Paul, Mike Lee, and the libertarian tradition within the GOP

The four Republican senators who voted for the **War Powers** resolution on **June 23, 2026** do not form a homogeneous ideological group — but they share a common characteristic: they have a tradition of conscience votes on questions of war and peace that transcends partisan discipline. **Rand Paul**, in particular, is the spiritual son of his father **Ron Paul**, the libertarian isolationist who had voted against the war in **Afghanistan** in 2001 and against virtually every military intervention since. **Mike Lee** of Utah has developed a similar position on the constitutional limits of presidential **war power**. For these two senators, the vote of **June 23** is a continuation of a position of principle they have defended for years, regardless of which party is in power.

What this vote reveals about the internal state of the **Republican Party** in 2026 is more complex: there is a growing tension between the **MAGA bloc** loyal to **Trump** and a libertarian/constitutionalist minority that refuses to give the president a blank check on wars. This tension is not new — it existed under **Obama** and under **Bush** — but it takes a particularly acute form when the president of their own party is the one conducting a war without authorization. The **50-48** vote says that this tension is unresolved. It also says it is not strong enough to produce a durable majority against Trump on this file.

*Rand Paul. This senator I have long watched with perplexity — too ideological, too isolationist, too incompatible with the realities of a world that sometimes demands American power — voted right on this file. Not for the right reasons in every case, not with a perfect strategy. But on the principle: war requires Congressional authorization. On that point, he was right. And in a Senate where convictions of principle are rare, even an imperfect conviction deserves to be noted.*

## The impact of the vote on the credibility of the American threat toward Iran

### When Congress weakens the credibility of presidential deterrence

The **War Powers** vote of **June 23, 2026** has a concrete effect on the **60-day** negotiations that follow the memorandum of understanding of **June 17**: it weakens the credibility of the American threat to resume strikes if **Iran** does not honor its commitments. In a negotiation, the credibility of the threat conditions the adversary's concessions. If **Tehran** calculates that **Trump** cannot resume strikes without triggering another vote in the **Senate** — and that this vote is uncertain — then the pressure on **Iran** is structurally reduced. This is the perverse effect of the American constitutional system on **foreign policy**: by separating the president's **war power**, **Congress** protects democracy but complicates strategy.

Iranian negotiators immediately integrated this data into their calculations. Diplomatic sources cited in reports on the **Geneva** talks of **June 21-22** signaled a harder Iranian line after the Senate vote — increased resistance on the conditions for verifying the nuclear program, timelines for lifting sanctions, and American demands for expanded controls. This hardening is not directly attributable to the **War Powers** vote alone — there are other factors. But the timing says something about the signal that the Senate vote sent to **Tehran**.

*Congress as a brake on presidential foreign policy. This is one of the great paradoxes of American democracy: it deprives itself of part of its negotiating power by imposing legal constraints on the president. These constraints are necessary to prevent illegal wars. But they are also exploited by adversaries who calculate their room for maneuver in real time. Iran has understood this. Russia already knew. China is taking note for Taiwan.*

## The impact of the War Powers vote on the American negotiating strategy with Iran

### Congress as a factor in the Geneva negotiations

The **War Powers** vote of **June 23, 2026** had an immediate and documented effect on the ongoing American-Iranian negotiations in **Geneva**: it weakened the credibility of the American threat to resume strikes if **Iran** failed to respect its commitments from the memorandum of understanding of **June 17**. Iranian negotiators, according to diplomatic sources cited in the week's reports, adopted a harder posture in the days that followed the vote — pushing on timelines for lifting sanctions and resisting more on conditions for verifying nuclear installations. This hardening is not entirely attributable to the Senate vote, but the timing suggests a direct correlation.

The dynamic is classic in international negotiation theory: any public constraint imposed on the lead negotiator weakens their position against the adversary. The American **Senate**, in adopting the **War Powers** resolution with the support of four Republicans, signaled to **Tehran** that authorization for a resumption of strikes was not guaranteed. **Iran**, which had calculated its resistance margins on the basis of the overall American position, immediately adjusted its calculations. This is one of the real operational costs — often not accounted for in analyses of the **War Powers** vote that focus on its symbolic value — of parliamentary oversight of foreign policy in a crisis.

*Congress as a brake on the chief negotiator's credibility. This is the democratic paradox that nobody names comfortably in commentaries on the War Powers vote. Democracy requires parliamentary oversight. Parliamentary oversight sometimes weakens the negotiator. Both truths coexist. And managing them simultaneously is one of the deepest challenges of democracy in international politics.*

## Conclusion: democracy fights for itself, even awkwardly

### What this asks of us, as America's allies

As Westerners looking at **America** from the outside, this **War Powers** vote of **June 23, 2026** reminds us of something essential. The **United States** is not a monolithic power speaking with a single voice. It is institutions, tensions, tight votes, marginal rebels, and constrained majorities. When we treat **America** as a bloc — either as a perfect ally or as an uncontrollable power — we miss the reality of its institutional complexity. This complexity is simultaneously its strength — the capacity to self-correct — and its weakness — the slowness and inefficiency of its correction mechanisms.

Our work as lucid allies is not to adore or to detest **Trump**'s America. It is to understand these internal institutional tensions and to know how to position ourselves relative to them. The **War Powers** vote of June 23 says that **America** is not homogeneous in its support for Trump's policy. It is divided, as always, between those who follow and those who resist. And in that division, there is a space — for allies, for international institutions, for the **West** — to influence the trajectory. That space deserves to be used with intelligence and without naivety.

**By Maxime Marquette, columnist**

## Columnist's transparency note

### Editorial stance

I am not a journalist but a **columnist and analyst**. My expertise lies in observing and analysing the geopolitical, economic and strategic dynamics that shape our world. My work is to take political strategies apart, to understand global economic movements, to put the decisions of international actors in context and to offer analytical perspectives on the changes that are redefining our societies.

I do not claim the cold objectivity of traditional journalism, which stops at reporting facts. **I claim analytical clarity**, rigorous interpretation and a deep understanding of the complex issues that concern us all. My role is to give meaning to the facts, to place them in their historical and strategic context, and to offer a critical reading of events.

### Method and sources

This text keeps the basic distinction between **verified facts and interpretive analysis**. The rule never changes: a factual claim is published only when a verifiable source supports it, and the sources this article actually used are listed under **Sources**, never here.

**Primary source families** used by the publication, when the story has them: official statements from governments and international institutions, public statements by political leaders, reports from intergovernmental organisations, dispatches from recognised international news agencies.

**Secondary source families**: specialised publications, internationally recognised news media, analyses from established research institutions, reports from industry organisations.

When an article cites statistical, economic or geopolitical data, it comes from the institutions that produce it (intergovernmental organisations, central banks, national statistics offices), and the exact institution is named under **Sources**.

### Nature of the analysis

The analyses, interpretations and perspectives in the analytical sections of this article are a **critical, contextual synthesis** based on the information available, the trends observed and the expert comments cited in the sources consulted.

My role is to interpret these facts, to set them in the context of today's geopolitical and economic dynamics, and to give them a coherent meaning within the larger story of the changes shaping our time. These analyses reflect expertise built through continuous observation of international affairs and an understanding of the strategic mechanisms that drive global actors.

This article describes a documented state of affairs on its publication date, not a prediction: later developments may shift its outlook. No update is promised in advance; when an article is corrected or completed, the change is dated in the text.

*Democracy fighting for itself. That is the most beautiful possible definition of the War Powers vote of June 23 — even if this vote is imperfect, even if it temporarily weakens American credibility in negotiations. A democracy that allows its Senate to restrict the president's war power is a democracy that still functions. This is not guaranteed. In the world of 2026, it is precious.*

## Sources

### Primary sources

- [New York Times: Senate Votes to Direct End to Iran War, Rebuking Trump — June 23, 2026](https://www.nytimes.com/2026/06/23/us/politics/senate-trump-war-powers-iran.html)

- [Military Times / Reuters-Ipsos: Just one in four Americans believes the Iran war was worth its costs — June 23, 2026](https://www.militarytimes.com/news/your-military/2026/06/23/just-one-in-four-americans-believes-the-war-with-iran-was-worth-its-costs/)

- [Al Jazeera: Trump vows Iran will not charge Strait of Hormuz tolls, but says US might — June 20, 2026](https://www.aljazeera.com/news/2026/6/20/trump-vows-iran-will-not-charge-strait-of-hormuz-tolls-but-says-us-might)

### Secondary sources

- [YouTube: President Trump's FULL Press Conference Iran, Ukraine, G7 — June 18, 2026](https://www.youtube.com/watch?v=uycezVZKiUo)

- [FDD: Trump Administration Provides Billions in Unrestricted Oil Sanctions Relief to Iran — June 23, 2026](https://www.fdd.org/analysis/2026/06/23/trump-administration-provides-billions-in-unrestricted-oil-sanctions-relief-to-iran/)

- [White House: President Trump Delivers Remarks, Jun. 23, 2026 — June 23, 2026](https://www.whitehouse.gov/videos/president-trump-delivers-remarks-jun-23-2026/)

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Source: Maxime Marquette, MadMax. When citing, name the author and link https://mad-max.co/en/article/commentaire-le-senat-americain-tente-d-encadrer-trump-et-la-guerre-dixieme-acte