COLUMN: The Supreme Court slaps Trump on IEEPA tariffs — $166 billion to repay

COLUMN: The Supreme Court slaps Trump on IEEPA tariffs — $166 billion to repay

Introduction: The day the bill arrived

A ruling that shakes American trade policy

On February 20, 2026, the United States Supreme Court delivered a stinging verdict: the tariffs imposed by Donald Trump through IEEPA — the International Emergency Economic Powers Act — are unconstitutional. The decision, adopted by six votes to three, opens the door to massive refunds estimated at between $166 billion and $175 billion for the American importers who paid those taxes, now deemed unlawful.

This is no minor victory. It is a major fracture in the protectionist edifice that Trump had sought to erect on the ruins of multilateral trade rules. The courts have said no. And the bill is astronomical.

The IEEPA: an economic warfare tool that became too powerful

The IEEPA is a 1977 law designed to allow the president to act swiftly in national emergencies. Trump turned it into a sledgehammer to strike America's trading partners — allies and adversaries alike — by invoking increasingly elastic economic emergencies. American importers absorbed those costs for months, sometimes years, hoping for a judicial reversal. It came.

The Court determined that these tariffs fell under the exclusive authority of Congress, not presidential discretion. A constitutional line had been crossed. The majority of the justices, though some were appointed by Republican presidents, did not bend to the surrounding political pressure.

The immediate response: Section 122, emergency act version 2.0

Trump does not retreat — he pivots

The very day after the ruling, Trump reached for a new weapon: Section 122 of the Trade Act of 1974. A 10% surcharge on all American imports, effective immediately. The maneuver is clever: this provision has an automatic legal lifespan, expiring on July 24, 2026. It is less a trade policy than a political survival strategy.

Trump needs to preserve his image as the protector of the American economy in the eyes of his electoral base, even as the courts dismantle his tools one by one. Section 122 buys him a reprieve — short, limited, but politically exploitable. The administration knows it perfectly well.

A window closing on July 24, 2026

Section 122, unlike IEEPA, is a provision designed to be temporary. It had been used only once in recent history before Trump. Its automatic expiration on July 24, 2026 leaves the administration in a legislative race against the clock to find a permanent, constitutionally sound replacement vehicle.

The administration has already begun moves to propose new Section 301 tariffs before this critical deadline. The machine keeps turning, but it runs in permanent emergency mode — which is itself revealing.

$166 billion: a number that rattles the accountants

Will importers actually get their money back?

Estimates range from $166 billion to $175 billion in potential refunds. The figure is colossal. But the Trump administration is not simply going to write a check. It is actively contesting the total amount in court, seeking to minimize the scope of refunds owed, to narrow statutory limitation periods, and to complicate claims procedures for importers.

For American importers — from small businesses to distribution giants — this is a protracted legal battle. Some will have the resources to go the distance. Others, the smallest, may give up in the face of prohibitive legal costs. A victory in principle does not guarantee a victory in practice.

The arithmetic of unlawful protectionism

Those $166 billion represent money that American companies paid to their own government in the form of taxes now judged unconstitutional. This is not money that China or Europe paid — it is money from American consumers and businesses, passed on in prices, absorbed into commercial margins, handed down to employees as wage cuts.

The irony is brutal: Trumpian protectionism, supposed to defend the American economy, in reality taxed Americans themselves unconstitutionally for years. The Supreme Court has now officially confirmed it.

Global diplomatic and trade fallout

Europe and China read the ruling closely

The Supreme Court's decision sends a strong signal to America's trading partners: there are constitutional limits on the president's tariff power. Europe and China, which have been negotiating or absorbing these tariffs for years, will now factor this constraint into their diplomatic calculations.

For the European Union, which had implemented trade countermeasures, this decision creates a window for renegotiation. For China, whose Section 301 tariffs were upheld by the same Court on June 15, 2026, the legal distinction between the two tariff instruments takes on considerable strategic importance.

American credibility on the line

American trade policy is looking increasingly like a patchwork of invented emergencies, temporary provisions, and court rulings overturning previous decisions. For international businesses planning for the long term, this chronic instability is toxic. It erodes confidence in the American trading system and pushes partners toward alternative sourcing hubs.

Both the OECD and the IMF have warned against American trade unpredictability. The February 20, 2026 ruling does not solve this systemic problem — it reveals its true scale. The trading world needs stable rules, not presidential improvisations.

The administration contests, the courts keep going

The legal battle over refunds intensifies

The Trump administration does not acknowledge the full extent of its refund obligations. It is contesting before the Court of International Trade and other federal courts the calculation of amounts owed, the claims deadlines, and the identity of legitimate beneficiaries. It is a legal war of attrition aimed at reducing the financial hemorrhage on federal coffers.

Law firms specializing in international trade report an explosion in requests for advice since the February 20 ruling. The procedures are complex, the timelines uncertain, and the outcome far from guaranteed for each individual importer. The judicial victory is real, but its financial realization remains a long road.

Congress: the great absentee in this file

The Supreme Court's ruling reminds us of a constitutional truth that Congress has long ignored: it is Congress, not the executive, that holds constitutional tariff authority. But the current Republican Congress has shown little appetite for reclaiming the reins of this policy — too content to let the executive carry the political responsibility for unpopular tariffs.

This institutional abdication is a central part of the problem. As long as Congress does not legislate clearly on tariffs, presidents will keep improvising with available tools — at the risk of another costly and destabilizing judicial invalidation.

Impact on global supply chains

Large-scale realignments already irreversible

Since 2018, global supply chains have been massively reorganized to circumvent American tariffs on China. Factories have relocated to Vietnam, Mexico, and India. These industrial relocations represent billions in investment — irreversible in the short term even if tariffs were to vanish overnight.

The Supreme Court's ruling will not magically restore pre-2018 trade flows. It simply signals that the IEEPA instrument can no longer be used as the primary weapon. Other tariff tools remain in place, at various degrees of legal soundness and real economic effectiveness.

The American consumer still losing

At the end of the chain, the American consumer absorbed most of the tariff cost in the form of higher prices. Economic studies published since 2019 are unanimous: Trump's tariffs were paid primarily by Americans themselves, not by the targeted countries. The judicial ruling confirms the illegality of the mechanism, but it does not erase the billions already lost by American households.

The refund to importers — if it fully materializes — will not automatically translate into lower retail prices. Commercial margins have been rebuilt, prices adjusted durably. The American economy has absorbed the shock in silence, and the end consumer will likely never see a cent of those refunds.

What it means for the global trading order

The WTO gets a little breathing room

The World Trade Organization, whose authority has been gradually undermined since 2018 by American and Chinese unilateralism, sees in the February 20, 2026 decision an opportunity to reassert the relevance of multilateral rules. If even American courts constrain presidential tariff power, the argument that WTO rules are superfluous is significantly weakened.

Several diplomatic delegations quickly welcomed the decision. The European Union called for a resumption of transatlantic trade negotiations in this new context. The window is narrow — it closes on July 24, 2026 with the expiration of Section 122 — but it genuinely exists.

China caught between two strategic currents

The situation is paradoxical for Beijing: the IEEPA tariffs, invalidated, might have hit Chinese goods. But the Section 301 tariffs specifically targeting China were just upheld by the same Supreme Court on June 15, 2026. The judicial distinction between these two mechanisms gives Beijing both a partial victory and a lasting commercial threat.

China remains in the American commercial crosshairs — legally, this time, via mechanisms whose constitutional basis has been validated by the country's highest court. The pressure does not ease; it simply changes instrument. Beijing cannot afford to rejoice too quickly over this ruling.

The stakes for the 2026 midterms

Trump facing economic disillusionment among his base

The November 2026 midterms arrive in a tense economic context for Republicans. The IEEPA tariffs, meant to revive American industry, were ultimately ruled illegal. Section 122 expires in July. Section 301 negotiations are still uncertain. The administration must simultaneously manage the refund crisis and construct a coherent economic narrative for its voters.

June 2026 polls show record disapproval of Trump on economic issues. Discontent crosses traditional partisan lines. Farmers, small industrialists, retailers — all have absorbed the tariff costs. The judicial ruling reignites their legitimate frustration.

The Democratic opposition capitalizes on the ruling

Democrats are making the invalidation of IEEPA tariffs a central argument in their midterm campaign. The ruling hands them a concrete demonstration of the administration's governance failures: illegal policies, billions wasted, and now a costly legal battle to avoid reimbursing anyone. It is a powerful electoral narrative that is difficult to counter.

Whether Americans, accustomed to permanent political chaos, will grant this judicial decision the importance it deserves remains to be seen. The history of the last two decades of American politics suggests a capacity to absorb the absurd that remains disconcerting to outside observers.

Conclusion: Protectionism caught between illegality and permanent improvisation

A historic ruling that does not end the trade war

The February 20, 2026 ruling is historic — it invalidates a massive tariff instrument used for several years. But it does not end the American trade war. Trump immediately pivoted to Section 122, then toward Section 301. The protectionist machine keeps turning, looking for new legal foundations each time the old ones collapse under judicial blows.

The arm-wrestling match between the executive and the judiciary over American trade policy is not over. It is entering a new phase — more technical, more fragmented, but just as politically and economically intense for all global stakeholders.

The West needs predictable rules, not tariff stunts

In a context of heightened strategic competition with China, Russia, and Iran, the consistency and predictability of Western trade policy are major geopolitical assets. Every American tariff improvisation is a windfall for Beijing, which can present itself as a more stable and predictable trading partner. The West needs a solid trade architecture, not emergencies recycled from one law to the next every six months.

The Supreme Court's ruling may be the first step toward restoring that indispensable coherence. But the road is still long, and the 2026 midterms may well determine whether that road is even passable under the current administration.

By Maxime Marquette, columnist

Columnist's transparency note

Who I am and my acknowledged biases

I am a columnist and analyst of international political and economic affairs. I defend a liberal economic order grounded in clear multilateral rules, and I am skeptical of unilateral protectionism — whether American, Chinese, or otherwise. My analysis of Trump's tariffs is shaped by this perspective: I believe that trade predictability is an international public good and that emergencies invented to circumvent constitutional law weaken democratic institutions.

I am pro-Ukraine and convinced that the West must maintain its cohesion in the face of authoritarian regimes. I see American trade policy decisions through this broad geopolitical lens: every weakening of American credibility is a win for Moscow and Beijing.

What I know and what I do not

The figures cited in this article — $166 to $175 billion in potential refunds — are estimates published by specialized law firms and trade analysts, not definitive amounts. Legal proceedings are ongoing, and the final outcome of the refunds remains uncertain. I did not have access to internal Trump administration documents on its contestation strategy, and I make no claim to know the final outcome of these complex legal battles. I acknowledge this uncertainty openly.

My political analysis is that of an outside observer who has followed these files for several years. I may be wrong about the electoral consequences of the judicial ruling — American voters have proven repeatedly that they resist the logic that foreign analysts attribute to them.

Sources

Primary sources

BDO Insights: Supreme Court Invalidates IEEPA Tariffs — What Importers Need to Know — February 2026

CSIS: The State of Play — Global Impact of the SCOTUS Decision on IEEPA Tariffs — 2026

Reason Magazine: The Trump Administration Is Still Fighting to Keep Billions in Illegal Tariff Revenue — June 5, 2026

Secondary sources

Cenet Capital: Analysis of the Supreme Court's Ruling on IEEPA Tariffs — 2026

Kavout Market Lens: The $166 Billion Question — What Just Happened with Trump's Tariffs — 2026

Fortune: Europe, China, and the Trump Trade War — Section 301 Tariffs, Dumping and Subsidies — June 20, 2026