The Supreme Court ruled 6-3 that IEEPA does not authorize tariffs, voiding Trump's global trade regime and opening the door to $160B+ in refund claims.
The Supreme Court struck down President Trump's global tariff regime on Feb. 20, holding 6-3 that the International Emergency Economic Powers Act does not grant the president authority to impose tariffs [1]. Chief Justice John Roberts authored the majority opinion, joined by Justices Sonia Sotomayor, Elena Kagan, Neil Gorsuch, Amy Coney Barrett, and Ketanji Brown Jackson [1]. Justices Clarence Thomas, Samuel Alito, and Brett Kavanaugh dissented [1].
The case, *Learning Resources Inc. v. Trump*, reached the Court after lower federal courts considered challenges to tariffs the Trump administration imposed under IEEPA, citing national economic emergency [1]. The Court took up the question whether IEEPA's grant of presidential authority over international commerce extends to tariff-setting, a power Congress has historically exercised and delegated only through specific, enumerated statutes [1] [2].
Roberts applied the major questions doctrine, which requires Congress to speak clearly before ceding authority over decisions of vast economic and political significance [2]. The majority concluded that IEEPA contains no such clear statement authorizing tariffs and therefore cannot serve as the statutory basis for the administration's sweeping global tariff schedule [1] [2]. The ruling reaches the most expansive use of IEEPA trade authority in the statute's history and represents the broadest judicial limit on presidential trade power in the modern era [2]. Justice Kavanaugh, writing in dissent, acknowledged the stakes plainly, noting that the United States may be required to refund billions of dollars to importers who paid duties under the invalidated regime [1]. The government collected more than $160 billion in IEEPA tariff revenue before the ruling came down, and that figure anchors what may become an extensive wave of refund litigation in the Court of International Trade [1] [2].
The Trump administration moved quickly after the decision, announcing a replacement tariff structure of 10 to 15 percent using separate statutory authority [1]. That action signals the administration's intent to preserve some trade leverage while the legal landscape shifts, though the alternative authority's scope and vulnerability to challenge remain open questions [1]. Refund claimants will need to establish they have standing and timely preserved their claims, and the procedural mechanics of disbursing more than $160 billion, if courts order full repayment, have no modern precedent [2]. Watch the Court of International Trade dockets in the coming weeks for early refund motions and government responses.