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October 6, 2025court rulingtrade policyconstitutional lawexecutive authorityinternational tradetrade policyexecutive powerseparation of powers

Supreme Court to Rule Whether Trump Tariffs Exceed IEEPA Authority

The Supreme Court agreed to hear challenges to President Trump's sweeping tariffs imposed under the International Emergency Economic Powers Act, with petitioners arguing Congress never authorized tariffs through that statute. The cases consolidated legal challenges from importers and trade groups who argued the tariff authority exceeded what IEEPA permits. A ruling against Trump could invalidate hundreds of billions in tariff revenue and require congressional action.