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Strengthening Actions Taken to Adjust Imports of Aluminum, Steel, and Copper Into the United States

President Donald J. Trump issued this proclamation to tighten existing section 232 import restrictions on aluminum, steel, and copper, saying these imports continue to threaten U.S. national security. The action changes the tariff rules so that, starting April 6, 2026, the duties generally apply to the full customs value of covered products rather than just their metal content, and it sets updated tariff rates for different categories of metal articles and derivative products, with some lower rates for certain United Kingdom products and items made entirely from U.S.-sourced metal. It also revises which derivative products are covered, removes some products from the tariff lists, and creates a new system that lets the Commerce Secretary and the U.S. Trade Representative jointly add more derivative products on a rolling basis instead of using the old inclusion process. Trump said the proclamation was issued to strengthen and refine the metal tariff system so it more effectively supports domestic metal production and addresses the national security concerns identified in earlier proclamations.