What Happened
- The US Supreme Court ruled 6-3 on February 20, 2026, that President Trump's tariffs imposed under the International Emergency Economic Powers Act (IEEPA) were unconstitutional, in the case Learning Resources, Inc. v. Trump.
- Chief Justice John Roberts, writing for the majority, held that IEEPA's language — specifically the words "regulate" and "importation" — could not bear the weight of conferring broad tariff-imposition authority on the President.
- The ruling applied the "major questions doctrine," requiring Congress to clearly delegate authority for decisions of vast economic significance; such explicit delegation was absent in IEEPA.
- The decision invalidated both the "Reciprocal Tariffs" (imposed April 2025 on "Liberation Day") and the "Trafficking and Immigration Tariffs" on fentanyl grounds; tariffs on steel and aluminium imposed under separate statutes (Sections 232 and 301) remain in effect.
- By the date of the ruling, the US government had collected approximately $160 billion in IEEPA-based tariff payments from importers, raising questions about potential refunds.
Static Topic Bridges
International Emergency Economic Powers Act (IEEPA), 1977
IEEPA is a US federal law enacted on December 28, 1977, during the Carter administration that grants the President broad emergency economic powers following a declaration of a national emergency. It authorises the President to block transactions, freeze foreign assets, and regulate economic dealings when an "unusual and extraordinary threat" to national security, foreign policy, or the economy originates substantially from outside the United States. Historically, IEEPA was used for sanctions regimes (Iran, Russia, North Korea) rather than as a tariff instrument — no previous President had used it to impose blanket import duties before Trump.
- Enacted: December 28, 1977 (95th US Congress)
- Requires Presidential declaration of national emergency and biannual Congressional reporting
- Complemented by the National Emergencies Act, 1976, which places procedural limits on emergency powers
- Prior uses: sanctions on Iran (1979), Iraq (1990), Russia (2022) — not tariffs
Connection to this news: The Supreme Court held IEEPA never explicitly authorised tariff imposition; under the "major questions doctrine," such sweeping economic authority requires unmistakable Congressional delegation, which was absent.
Major Questions Doctrine (US Constitutional Law)
The major questions doctrine is a principle of statutory interpretation developed by the US Supreme Court holding that when an executive agency or the President claims authority to decide issues of vast economic or political significance, they must point to clear Congressional authorisation. The doctrine has emerged prominently in recent years as a check on executive overreach.
- Applied in West Virginia v. EPA (2022) to limit EPA climate authority
- Applied in Biden v. Nebraska (2023) to strike down student loan forgiveness
- Now applied in Learning Resources v. Trump (2026) to invalidate IEEPA tariffs
- Reflects the non-delegation principle embedded in the US Constitution's separation of powers
Connection to this news: Chief Justice Roberts invoked the doctrine to conclude that Congress could not have intended IEEPA's general language to grant the President authority to impose $160 billion in tariffs on virtually all imports — without explicit statutory text authorising such action.
WTO Dispute Settlement and Multilateral Trade Architecture
The World Trade Organization (WTO), established in 1995 as the successor to GATT (1947), governs international trade rules and provides a legally binding dispute settlement mechanism. Member countries may challenge another nation's tariffs as violations of Most Favoured Nation (MFN) obligations or the General Agreement on Tariffs and Trade. The WTO's Appellate Body, however, has been largely paralysed since 2019 due to the US blocking appointment of new judges.
- WTO established: January 1, 1995 (headquartered in Geneva, Switzerland)
- 166 member countries
- Dispute Settlement Understanding (DSU) provides for consultations, panel rulings, and Appellate Body review
- US had already filed WTO challenges against the IEEPA tariffs; the domestic judicial ruling now makes those largely moot
- Bilateral "trade deals" struck during the IEEPA tariff period are now legally uncertain, as they were negotiated under the threat of now-invalidated tariffs
Connection to this news: The Supreme Court ruling complicates the legal basis for bilateral trade frameworks the US negotiated with partners like the UK, EU, Japan, and South Korea, as those deals were shaped by IEEPA tariff leverage that no longer exists.
Section 122 of the US Trade Act of 1974
Following the IEEPA ruling, the Trump administration pivoted to imposing a new 10% global tariff under Section 122 of the Trade Act of 1974. Section 122 grants the President authority to impose temporary tariff surcharges to address balance-of-payments deficits but limits such measures to 150 days unless extended by Congress.
- Authorises a maximum 15% surcharge on imports for balance-of-payments purposes
- Duration capped at 150 days without Congressional extension
- Requires notification to the WTO under balance-of-payments provisions
- Unlike IEEPA, Section 122 has a well-established statutory basis for trade measures
Connection to this news: After the ruling, the administration immediately enacted a 10% Section 122 tariff on approximately $1.2 trillion of annual imports, maintaining tariff pressure while operating on a different — though still contested — legal footing.
Key Facts & Data
- Ruling date: February 20, 2026 (Learning Resources, Inc. v. Trump, Case No. 24-1287)
- Vote: 6-3; dissenters — Justices Thomas, Kavanaugh, and Alito
- IEEPA tariff revenue collected up to ruling: approximately $160 billion
- Replacement measure: Section 122 global surcharge of 10%, effective February 24, 2026
- Section 232 tariffs (steel and aluminium) and Section 301 tariffs (China) remain in force
- US bilateral "trade frameworks" affected: UK, EU, Japan, South Korea, Indonesia, Vietnam, Philippines
- WTO Appellate Body remains paralysed since 2019 (US blocking new judge appointments)