“Trump had used the International Emergency Economic Powers Act (IEEPA) to impose tariffs on nearly all imports to the U.S., even though that law narrowly authorizes presidential actions only in response to “an unusual and extraordinary threat.”
International commerce is plainly neither of those things, as the court concluded in its ruling. “We do not read IEEPA to delegate an unbounded tariff authority to the President,” the judges wrote. “We instead read IEEPA’s provisions to impose meaningful limits on any such authority it confers.”
By reviewing the actions of the executive branch to ensure they comport with the underlying law, the Court of International Trade merely fulfilled the constitutional role of the judiciary. “
https://reason.com/2025/05/29/did-activist-judges-derail-trumps-tariffs