The White House has announced changes to the scope of products from Canada subject to additional 50% duties under Section 338 of the Tariff Act of 1930. The proclamation, signed October 23, 2026, removes certain Canadian-origin products from these additional duties while adding other products to the list of goods subject to them. The changes take effect October 30, 2026, at 12:01 a.m. Eastern Time.

The proclamation revises the product coverage of the additional 50% duties imposed under the administration’s measures addressing Canadian trade practices involving motor vehicles. According to the White House:

  • Certain products will be exempt: Eligible Canadian products listed in Annex I, Part A will no longer be subject to the additional 50% duty under this measure.
  • Other products will remain or become subject to duties: Products listed in Annex I, Part B will be subject to the additional 50% duty.
  • Other tariffs still apply: These additional duties are imposed on top of applicable Section 232 duties, so an exemption from this measure does not automatically eliminate other tariff obligations.
  • The effective date matters: The revised treatment applies to goods entered for consumption, or withdrawn from warehouse for consumption, on or after October 30, 2026.

This proclamation changes the scope of the additional 50% duties on certain Canadian products, but it does not provide blanket tariff relief for Canadian imports. Importers should verify the exact product coverage and applicable HTSUS provisions rather than relying solely on a product description or country of origin.

Link to text of the proclamation: FURTHER MODIFYING THE SCOPE OF PRODUCTS OF CANADA SUBJECT TO THE ADDITIONAL DUTIES IMPOSED TO OFFSET CANADIAN DISCRIMINATION AGAINST THE COMMERCE OF THE UNITED STATES WITH RESPECT TO MOTOR VEHICLES – The White House

Link to Annex 1: 2026ModifyingAuto338.prc_.AnnexI-3.pdf

Link to Annex II: 2026ModifyingAuto338.prc_.AnnexII-2.pdf

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