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ARTICLE · 15 SEPTEMBER 2025

Trump Tariff Tracker -- September 11

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On September 9, the Supreme Court decided to hear two of the cases challenging the legality of tariffs imposed under IEEPA, on an expedited basis. Briefing will conclude by October 30 and the consolidated cases...

United StatesInternational Law
Matthew T. West
Matthew T. West

On September 9, the Supreme Court decided to hear two of the cases challenging the legality of tariffs imposed under IEEPA, on an expedited basis. Briefing will conclude by October 30 and the consolidated cases will be heard by the court the first week of November. The Supreme Court consolidated two cases on the tariff issue. One case was before the court on the merits following the Court of Appeals for the Federal Circuit's ruling that the reciprocal tariffs and fentanyl-related tariffs were beyond the President's authority under IEEPA. The second case was pending before the Court of Appeals for the D.C. Circuit, and exclusively dealt with whether IEEPA categorically allows for tariffs.

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