Supreme Court Rules 6-3: Presidents Cannot Impose Tariffs Under IEEPA

The Supreme Court ruled 6-3 in Learning Resources, Inc. v. Trader that the International Emergency Economic Powers Act does not authorize the President to impose tariffs. The majority held that tariffs constitute taxation reserved for Congress under Article I, Section 8 of the Constitution, striking down a key trade tool presidents have used for decades.

The decision directly challenges the legal basis for recent White House tariff actions on aluminum, steel, copper, and pharmaceuticals. The ruling sets a separation-of-powers precedent that could force the administration to seek Congressional approval for broad tariff increases.

Importers, manufacturers, and trade attorneys should monitor how the administration responds and whether Congress moves to enact tariff authority through legislation.