Supreme Court Curbs Executive Tariff Power, Forcing New Trade Strategies and Market Adjustments

The 6-3 decision, authored by Chief Justice John Roberts, found that the use of emergency powers under the International Emergency Economic Powers Act (IEPA) for imposing these tariffs was unconstitutional. President Trump expressed deep disappointment and shame, calling the ruling "incorrect" but stating that "powerful alternatives" exist.

He announced plans to enact a 10% global tariff under a different statute, the Trade Act of 1962, and indicated that existing national security tariffs under Section 232 and Section 301 remain in place. The court's decision does not address potential refunds for billions collected in tariffs.

While this ruling limits the president's unilateral ability to set tariffs, legal experts suggest other federal statutes can still be used to impose duties, though potentially through a longer process. The decision reaffirms Congress's constitutional power to tax.