President Trump Adjusts Section 232 Metal Tariffs

NAM News Room June 3, 2026


Late on Monday, President Trump issued a proclamation that temporarily reduces the Section 232 metal tariff on certain agricultural equipment, industrial equipment, machinery and related products that “serve an important role in productive domestic economic activity.”

The details: The changes move certain products to different annexes, reducing tariff rates until the end of 2027.

  • Certain agricultural equipment and certain HVAC systems and components predominantly for residential use were moved from Annex I-B to Annex III, reducing a 25% tariff on full value to a 15% tariff, effective June 8 until Dec. 31, 2027.
  • Certain “mobile industrial equipment and machinery” (e.g., forklifts and bulldozers) were moved from Annex I-B to a new Annex I-C, which temporarily reduces applicable rates to 25% or lower until Dec. 31, 2027.
  • The proclamation also enables self-declaration of a 15% tariff rate on any parts classified in Chapters 84, 85 or 87 listed in Annex I-B (normally 25%), providing the importer certifies that the part will be used exclusively to manufacture mobile industrial equipment identified in  Annex I-C or agricultural equipment or fixed industrial equipment listed in Annex III.

The threshold: The proclamation also adjusted the threshold for imported products to qualify as “composed entirely” of American steel, aluminum or copper downward from 95% to 85%.

  • To qualify, a product’s content of aluminum or copper smelted and cast in the U.S., or steel melted and poured in the U.S., must account for at least 85% of the weight of the aluminum, copper or steel.

The NAM’s framework: Some of the adjustments in this proclamation reflect the rationale in the NAM’s Manufacturing Investment Accelerator Program.

Learn more: Questions about the new proclamation? Contact NAM Senior Director of International Policy Anne Collett.