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USTR to Launch Accelerated Section 301 Probes Covering Most Major Partners

Officials say the pivot preserves negotiated trade deals following the Supreme Court’s rejection of IEEPA tariffs.

U.S. Trade Representative Jamieson Greer on the day he attends a working lunch with EU ministers responsible for trade, in Brussels, Belgium, November 24, 2025. REUTERS/Piroschka van de Wouw

Overview

  • U.S. Trade Representative Jamieson Greer said new Section 301 investigations will span most major trading partners.
  • The probes will examine pharmaceutical pricing, industrial excess capacity, forced labor, discrimination against U.S. tech and digital goods, digital services taxes, ocean pollution, and practices in seafood and rice.
  • USTR plans an expedited timetable and may use tariffs if unfair practices are found, while continuing existing cases involving Brazil and China.
  • President Trump imposed a 10% global import duty for 150 days and directed USTR to open the new Section 301 inquiries.
  • The Supreme Court struck down IEEPA-based reciprocal and fentanyl tariffs, and officials say other tariffs under different statutes remain in effect as recently negotiated trade agreements stay in place.