# How the Supreme Court Transferred Tariff Power to Jamieson Greer > Introduction: a judicial earthquake at the heart of American trade policy - Author: Maxime Marquette - Publisher: MadMax (https://mad-max.co) - Section: Reportage - Published: 2026-07-03 - Canonical URL: https://mad-max.co/en/article/recit-comment-la-cour-supreme-a-transfere-le-pouvoir-tarifaire-a-jamieson-greer ## Introduction: a judicial earthquake at the heart of American trade policy ### A ruling that shook the **White House** On February 20, 2026, the **Supreme Court of the United States** issued a ruling that immediately upended the entire architecture of American trade policy. In the case known as **Learning Resources v. Trump**, the justices ruled that the International Emergency Economic Powers Act, or **IEEPA**, could not serve as the legal basis for the worldwide tariffs unilaterally imposed by President **Donald Trump**. **This ruling** immediately invalidated roughly seventy percent of the tariffs imposed worldwide by the American administration since the start of its second term, forcing the **White House** to quickly find a new legal foundation to sustain its aggressive trade doctrine toward both partners and rivals. ### An administration that refuses to abandon its doctrine Far from resigning itself to this major judicial setback, the **Trump** administration reacted with remarkable speed, signaling within days of the ruling that it would actively seek other legal mechanisms to pursue its tariff policy, even if that meant taking narrower and more constrained legal routes. *I view **this ruling** from the **Supreme Court** as a necessary victory for American constitutional balance, even as I acknowledge that **Trump** remains, despite his excesses, a necessary evil for maintaining Western pressure on **China** during **this** tense geopolitical period.* ## The precise content of the Learning Resources v. Trump decision ### A challenge initiated by small American businesses The case originated from a challenge brought by several American companies, including **Learning Resources**, who argued that the **IEEPA** did not grant the president the authority to impose tariffs under an economic emergency declaration, and that even if such authority existed, it could not be as sweeping as the one claimed by the **White House**. The **Court of International Trade** initially ruled that IEEPA did not authorize the tariffs imposed by **Trump**'s executive orders, a decision subsequently upheld by the **Court of Appeals for the Federal Circuit**, before the administration brought the case before the **Supreme Court**. ### The constitutional stakes raised by **this case** Beyond the technical question of interpreting **IEEPA**, **this case** raised fundamental questions about the **separation of powers** and the so-called major questions doctrine, under which **Congress** must express any delegation of major economic and trade powers to the president clearly and explicitly. The **Supreme Court** held that the provision allowing the president to "regulate" imports or exports during a national emergency did not implicitly include the power to impose tariffs, a reasoning that now seriously limits presidential latitude on trade matters. *I think **this constitutional clarification**, however embarrassing for the **Trump** administration, paradoxically strengthens the long-term credibility of American institutions in the eyes of our Western allies, who had sometimes sensed an imperial presidency on trade matters.* ## The Trump administration's swift counterattack ### The immediate resort to **Section 122** In the days following the **Supreme Court**'s decision, the **Trump** administration quickly activated an alternative legal mechanism, **Section 122 of the Trade Act of 1974**, to impose a temporary ten percent worldwide tariff, which took effect on February 24, 2026. This provision, historically rarely used, allows the president to impose temporary surcharges in response to major imbalances in the **balance of payments**, but it carries a strict legal limit: its application cannot exceed **one hundred fifty days** without an explicit extension voted by the American **Congress**. ### A declaration of defiance owned by **Greer** Just two days after the Court's ruling, US Trade Representative **Jamieson Greer** summarized the administration's position in a line that became emblematic: "The legal tool to apply it, that might change, but the policy hasn't changed." That statement, made on February 22, 2026, illustrated the **White House**'s determination to maintain its trade doctrine despite the judicial defeat. *I find this quote from **Greer** revealing of a defining trait of **this administration**: no matter what the law says, the political objective stays fixed, and it then falls to the lawyers to find a legal path, however narrow, to get there.* ## The countdown to the July 2026 expiration ### A strictly time-limited legal window The temporary ten percent worldwide tariff imposed under **Section 122** is set to expire at the end of July 2026, unless the American **Congress** votes an explicit extension, a politically uncertain scenario given the persistent tensions between the two chambers over the administration's trade policy. **This deadline** is approaching fast, and several trade analysts are closely watching signals from **Capitol Hill** to determine whether a majority could actually form in favor of an extension, or whether the administration will once again have to improvise a new legal strategy. ### The appeals still pending on the original IEEPA tariffs Alongside this legislative race against the clock, several appeals proceedings related to the original tariffs imposed under **IEEPA** remained pending as of May 2026, adding yet another layer of legal uncertainty to an already considerably complex file. *I expect this persistent legal uncertainty to become the new normal for American trade policy under this presidency: every tariff win for the **White House** now seems doomed to be followed almost immediately by a judicial challenge.* ## The profile and rise of Jamieson Greer ### A veteran of American protectionism **Jamieson Greer** was confirmed as the **twentieth US Trade Representative** on February 27, 2025, bringing to the role considerable experience gained as **chief of staff** to **Robert Lighthizer**, the architect of the protectionist trade policy of Trump's first term. This close relationship with **Lighthizer** allowed **Greer** to play an instrumental role in implementing tariffs against **China** as well as in negotiating the phase-one trade deal and the **United States-Mexico-Canada Agreement**, two files that shaped his reputation as an experienced and determined trade negotiator. ### Power considerably expanded after the court ruling Paradoxically, the judicial failure of the **White House**'s IEEPA approach had the effect of considerably strengthening **Jamieson Greer**'s institutional influence, since tariff authority now flows more directly through the Trade Representative's office rather than through a unilateral presidential declaration of economic emergency. *I note with some interest this institutional irony: in trying to limit unilateral presidential power, the **Supreme Court** unintentionally strengthened **Greer**'s bureaucratic and diplomatic weight, who must now manage a trade policy that is both more complex and more institutionally anchored.* ## The new architecture of American tariff power ### A shift in the center of gravity away from the Oval Office Before this court ruling, the **White House** could unilaterally impose tariffs simply by declaring a **national economic emergency**, concentrating most trade power directly in the hands of the president and his immediate circle. After the withdrawal of **IEEPA** as the primary legal basis, tariff authority now flows more directly through the Trade Representative's office, which must rely on more specific, better-regulated legal mechanisms that are often slower to activate than a simple presidential emergency declaration. ### The new tools **Greer** now commands **Jamieson Greer** now directly oversees authority under **Section 122** as well as **formal trade investigations**, two legal instruments that require more rigorous technical and procedural preparation than simply invoking a national economic emergency. *I believe this increased procedural rigor, even if it slows certain decisions, ultimately produces a more predictable trade policy and therefore one more favorable to Western market confidence, a net gain despite the **White House**'s short-term frustrations.* ## China, a constant target despite the change in legal tools ### A strategic continuity openly acknowledged **Jamieson Greer** has clearly signaled that **China** remains the top priority target of American trade policy, regardless of the specific legal tools used to enforce it, confirming that the change in legal vehicle represents no shift whatsoever in the fundamental strategic orientation toward Beijing. **This strategic continuity** reassures Western allies worried about a possible easing of American pressure on **China** following the judicial setback, confirming that Washington remains determined to contain Chinese economic and technological expansion through every legal means available. ### New mechanisms being considered to maintain the pressure According to indications given by **Greer** himself, additional tariff hikes targeting Chinese goods could now come from existing trade agreements, new formal investigations, or alternative mechanisms such as **service fees** or **quota systems**, a diversification of tools that complicates Beijing's task of anticipating the next American move. *I think this diversification of tools, though legally more complex for the administration, actually amounts to a better long-term strategy against **China**, since it makes American trade policy more resilient to future judicial challenges.* ## The repercussions for international trade partners ### An uncertainty that complicates allied planning America's trade partners, including close allies like **Canada**, the **European Union**, and several Asian countries, must now contend with an American tariff architecture in constant flux, making it harder to plan their own long-term trade and industrial strategies. This persistent uncertainty illustrates the collateral costs of the **Trump** administration's aggressive trade doctrine, where even court rulings favorable to easing American protectionism end up producing new forms of uncertainty rather than genuine, lasting clarity. ### A negotiating opportunity for some skillful partners Paradoxically, this period of legal transition also offers a window of opportunity to trade partners skillful enough to negotiate more favorable terms before new, more rigid tariff mechanisms settle durably under Greer's strengthened authority. *I advise all our Western allies, including Canada, to take advantage of this window of legal uncertainty to negotiate precise sectoral deals before Greer definitively consolidates his new post-IEEPA tariff architecture.* ## Political reactions in Washington to this power shift ### A **Congress** split between relief and mistrust Several members of the American **Congress**, particularly those concerned about the gradual erosion of their own constitutional authority over international trade, welcomed the **Supreme Court**'s decision as a welcome reminder of the limits of unilateral executive power on trade matters. Other lawmakers, more aligned with the **Trump** administration's protectionist agenda, are more worried about the added complexity this ruling imposes on the swift implementation of trade measures deemed necessary against Chinese economic competition. ### A political battle set to continue as July approaches As the July 2026 deadline for the expiration of the ten percent **Section 122** tariff approaches, an intense political battle is brewing in **Congress** between those pushing for an extension and those who want to use this occasion to more firmly reassert **legislative prerogatives** over trade policy. *I expect a limping compromise rather than a definitive clarification, since neither **Trump**'s supporters nor his opponents in **Congress** have a clear political interest in fully owning responsibility for such a controversial decision as election deadlines approach.* ## The concrete economic impact for American businesses ### **Importers** still facing tariff uncertainty American companies that import goods from abroad continue to face considerable tariff uncertainty, having to navigate between the currently active **Section 122** tariffs, the appeals proceedings still pending on the old IEEPA tariffs, and the prospect of an upcoming expiration with no guarantee of a clear replacement. This prolonged uncertainty weighs directly on the investment and **supply chain** planning decisions of many American businesses, which are struggling to build reliable forecasts in such a shifting regulatory environment. ### Consumers absorbing part of the cost Despite the administration's repeated arguments that tariffs strengthen American public finances, many **independent economists** continue to point out that these costs are largely passed on to **American consumers** themselves, in the form of higher prices for imported goods. *I remain convinced that this contradiction between the official rhetoric on tariff benefits and the reality experienced by American consumers will eventually become a major electoral issue, whatever the final legal outcome of this court battle.* ## The broader geopolitical dimension of this file ### A signal sent to **China**, **Russia**, and **Iran** Beyond purely domestic American legal considerations, **this case** sends an important geopolitical signal to **strategic rivals** like **China**, **Russia**, and **Iran**, who are closely watching the institutional capacity of the **United States** to maintain a coherent trade policy despite domestic judicial challenges. This close scrutiny from our shared strategic adversaries underscores how important it is, for the entire Western bloc, to demonstrate enough institutional resilience so that these domestic judicial challenges are not perceived as a sign of overall strategic weakness. ### An opportunity to strengthen coordination with Western allies This period of legal transition could also represent an opportunity for the **Trump** administration and Representative **Greer** to strengthen trade coordination with Western allies, particularly on shared files related to Chinese **economic and technological competition**. *I think this institutional crisis, however embarrassing for Washington, could paradoxically strengthen **Western cohesion** if it pushes the administration to favor multilateral coordination over the pure **tariff unilateralism** that characterized the first months of this presidency.* ## The institutional lessons to draw from this judicial saga ### The forceful return of American **constitutional checks and balances** This judicial saga strikingly illustrates the persistent vitality of American constitutional checks and balances, demonstrating that even an administration determined to exercise maximum executive power on trade matters remains subject to real and effective judicial review from the **federal court system**. This reaffirmation of constitutional limits, though politically embarrassing for the **Trump** administration, sends a reassuring long-term message about the soundness of **American democratic institutions**, an important strategic asset for the **West**'s credibility against its authoritarian rivals. ### An administration learning to navigate a more constrained legal framework The speed with which the **Trump** administration identified and activated **Section 122** as a legal alternative also demonstrates notable institutional adaptability, even though this adaptation comes at the cost of growing legal complexity and reduced trade predictability for all the economic partners involved. *I take away one simple lesson from this saga: American democratic institutions, despite their current internal tensions, retain a capacity for resilience and self-correction that our authoritarian rivals simply do not possess, and it is precisely that difference that should keep giving us confidence in the future of the **West**.* ## Historical precedents for the use of Section 122 ### A largely forgotten **Nixon Shock** in trade history The last notable use of a mechanism comparable to **Section 122** dates back to the Nixon Shock of 1971, when President **Richard Nixon** imposed a temporary import surcharge in response to a major monetary crisis, ending the **dollar's convertibility into gold** and redefining the **international monetary order** for decades. **This historical precedent**, largely forgotten by the general public but well known to specialists in international trade law, shows that **Section 122** was originally designed as an exceptional emergency tool, not as a routine trade-policy mechanism meant to work around other legal bases struck down by the courts. ### A repurposed use according to several trade lawyers Several **specialized lawyers** in international trade law believe the current use of **Section 122** by the **Trump** administration represents a repurposing of its original intent, turning a tool designed for exceptional monetary crises into a convenient substitute for the IEEPA authority struck down by the **Supreme Court**. This legal criticism, though technically well-founded according to several experts, has so far not produced any formal judicial challenge likely to conclude before the natural one-hundred-fifty-day deadline set by the law itself, leaving the debate largely theoretical for now. *I find it fascinating that the **Trump** administration had to reach back more than fifty years to find a precedent to legally justify its current trade policy, a telling sign of the lack of sufficiently robust modern tools to sustain such aggressive and prolonged protectionism.* ## The judiciary's role in American trade balance ### A precedent that will shape future administrations Beyond its immediate impact on the **Trump** administration, the **Supreme Court**'s decision in the Learning Resources case establishes a lasting precedent that will also constrain future administrations, regardless of party, to respect stricter limits when seeking to invoke emergency economic powers to justify unilateral tariff measures. **This precedent** structurally strengthens the American **Congress**'s role as the ultimate arbiter of national trade policy, a development several **constitutional scholars** welcome as a return to the balance of powers intended by the drafters of the American Constitution. ### A signal of institutional stability for **international investors** **This judicial clarification**, despite the transitional period of uncertainty it caused, paradoxically sends a reassuring long-term signal to international investors, confirming that the American judicial system retains both the capacity and the will to contain potential excesses of executive power, even on highly sensitive economic matters. This institutional soundness remains a considerable comparative advantage for the **United States** against rival political systems like **China**'s, where no independent judicial challenge could ever call into question a trade decision made at the top of the executive branch. *I believe this American capacity for institutional self-correction, even when chaotic and embarrassing, remains one of the most underrated comparative advantages of the **West** against authoritarian regimes where no judicial check could ever produce a similar result.* ## Conclusion: reorganized tariff power, still contested ### A judicial victory with limited practical consequences The **Supreme Court**'s decision in **Learning Resources v. Trump** undeniably represents a victory for constitutional separation-of-powers principles, but its practical consequences remain largely limited by the speed with which the **Trump** administration identified an alternative legal path through **Section 122**. **This reorganization** of American tariff power, now concentrated more heavily in the hands of **Jamieson Greer** and his office, illustrates this administration's institutional adaptability in the face of judicial constraints, while keeping its strategic determination toward **China** and the West's other economic rivals fully intact. ### A file to watch closely until the July deadline The July 2026 deadline for the expiration of the ten percent tariff marks the next crucial milestone in this file, whose outcome will determine whether the American **Congress** chooses to reassert its constitutional authority over international trade or continue delegating considerable latitude to the executive branch, regardless of which administration is in power. *I'll close this narrative with a simple conviction: no matter which legal vehicle is chosen, American resolve to contain **China** will not weaken, and it is that strategic continuity, more than the legal mechanics themselves, that truly matters for the future of the **West**.* **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. ## Sources ### Primary sources - [Supreme Court ruling shifts US tariff power to Trade Representative Jamieson Greer — KuCoin News, June 28, 2026](https://www.kucoin.com/news/flash/supreme-court-ruling-shifts-us-tariff-power-to-trade-representative-jamieson-greer) - [Learning Resources, Inc. v. Trump — Supreme Court Bulletin, Cornell Law School, 2026](https://www.law.cornell.edu/supct/cert/24-1287) ### Secondary sources - [Trump's economic agenda and the Supreme Court tariff ruling — Axios, June 30, 2026](https://www.axios.com/2026/06/30/trump-supreme-court-economy) - What the Supreme Court tariff ruling means for US trade policy — Foreign Policy, July 2026 - [US launches new Chinese tech crackdown, will ban some imports — Reuters, June 26, 2026](https://www.reuters.com/world/asia-pacific/us-launches-new-chinese-tech-crackdown-will-ban-some-imports-2026-06-26/) - [The Guardian International — ongoing coverage of American trade policy, June 2026](https://www.theguardian.com/international) --- Source: Maxime Marquette, MadMax. When citing, name the author and link https://mad-max.co/en/article/recit-comment-la-cour-supreme-a-transfere-le-pouvoir-tarifaire-a-jamieson-greer