Roughly 80 Americans work in industries that use steel for every person employed making it, yet tariff policy has increasingly squeezed those downstream firms while protecting a far smaller group of producers, according to a National Taxpayers Union blog published August 25, 2026. The report warns that the administration's steel, aluminum, and copper tariffs have triggered what economists call "cascading protection" — a cycle where tariffs on raw materials force the government to impose additional tariffs on the finished products made from those materials. The policy has expanded far beyond its original scope, the report concludes, and now threatens to entrench more of the private sector in government dependence.
The scale of expansion has been dramatic. Last year alone, the Commerce Department added 407 product categories to the steel and aluminum tariff list, including items like wind turbines, bulldozers, and even furniture. On August 6, the administration proposed adding 14 more "derivative" products — items manufactured using tariffed materials — such as aluminum powder and brass-wind instruments. In his second term, the president raised steel and aluminum tariffs to 50 percent and added a 50 percent tariff on certain copper products, building on the original Section 232 tariffs imposed during his first administration. Section 232 of the Trade Expansion Act of 1962 grants the president authority to restrict imports when they threaten national security, a provision that existed for more than six decades but was used sparingly before the Trump administration revived it a decade ago.
The report explains how tariffs on input materials create a squeeze that forces policy expansion. When steel and aluminum prices rise due to tariffs, domestic manufacturers who use those metals — refrigerator makers, boat builders, welders — face higher costs that make their products less competitive against imports from countries without such tariffs. The administration's response has been to extend tariff protection to those downstream products rather than remove the original tariffs. According to the report's author, this logic could eventually provide "an inappropriate excuse for a tariff on imported cell phones" that contain aluminum, copper, and steel, even though smartphones were exempted from reciprocal tariffs last year.
This approach creates a competitiveness trap, the report argues. Tariffs on metals raise costs for American firms, making their products more expensive in international markets compared to foreign rivals. While adding tariffs on downstream products may shield those companies in the domestic market, it does little to help them compete abroad, the report notes. The analysis also highlights how the policy has drifted from its legal foundation: whatever national security argument might support protecting domestic steel production becomes increasingly hard to sustain as protection extends to upholstered furniture and tubas. Recent research on the current tariff regime shows the costs have fallen overwhelmingly on U.S. importers and consumers rather than foreign exporters, the report states.
The report recommends attacking the problem at its source by removing the tariffs that started the cycle. As cascading tariffs spread through the economy, more of the private sector becomes reliant on government protection — a pattern the report describes as "a recipe for decline." The alternative is a continued expansion of tariff coverage that moves further from national security justifications and deeper into protecting an ever-widening universe of products that happen to contain steel, aluminum, or copper in some capacity.