The US Commerce Department has added 407 product categories to the list of goods subject to President Donald Trump’s 50% tariffs on steel and aluminum content, expanding the duties to a wide range of consumer and industrial items. The measure, published in the Federal Register and effective immediately, covers products such as wind turbines, mobile cranes, household appliances, construction machinery, railcars, motorcycles, baby seats, automotive exhaust parts and even fire extinguishers. Under Secretary for Industry and Security Jeffrey Kessler said the action "shuts down avenues for circumvention" and supports the continued revitalization of domestic metal producers. Research firm Evercore ISI estimates the newly covered codes represented more than $200 billion in imports last year, lifting the average US tariff rate by roughly one percentage point. Trade specialists said the abrupt rollout gave importers little time to adjust, raising compliance costs as companies scramble to document the steel and aluminum share in finished goods. Foreign automakers and Tesla had urged Washington to spare certain parts, arguing US mills lack sufficient capacity, but those appeals were rejected. The broader metals policy mix is already filtering through supply chains. Major US manufacturers of electrical wire, including Southwire and Berkshire Hathaway-owned Cerro Wire, raised listed prices by about 5% just weeks after the administration exempted basic refined copper imports from tariffs—an indication, analysts say, that consumers could face higher costs even as underlying metal prices fall. Separately, the Department of Homeland Security said it will intensify scrutiny of steel, copper, lithium and other imports linked to China’s Xinjiang region to enforce a US ban on goods allegedly produced with forced labor. The combined steps deepen the administration’s effort to protect domestic industries and clamp down on supply-chain practices it deems unfair or abusive.