Trump opens tariff probe on China

Tariffs are back at the center of Trump’s trade strategy — but in a more lawyered-up form. On Tuesday, May 5, the U.S. Trade Representative opened hearings in a Section 301 investigation into what the administration calls “structural excess capacity” in manufacturing abroad. China is the obvious target, but the case is much wider: it also names the EU, Japan, South Korea, Mexico, Vietnam, India, Malaysia, and several others. ### What actually opened this week? This week’s news is the hearing itself. USTR scheduled a four-day public hearing running May 5 through May 8 at the U.S. International Trade Commission, after formally launching the investigations on March 11 and collecting comments through April 15. Nearly 150 witnesses were expected, including companies, trade groups, think tanks, and foreign governments. ### What is the government investigating? The administration is using Section 301 of the 1974 Trade Act — the same broad trade law Trump used in his first term against China. The claim here is that some economies built manufacturing capacity far beyond what domestic or global demand would justify, then pushes firms into weak profitability in sectors that keep producing anyway. ### Why is China the real center of gravity? Because “overcapacity” is basically Washington’s shorthand for a specific China problem. U.S. officials argue that Chinese state support lets firms keep expanding in sectors like autos, batteries, steel, shipbuilding, and in the broader 16-economy case, trade analysts keep separating China from the rest because the scale is different. ### Why use Section 301 now? Because Trump’s bigger tariff weapon got knocked out in February. On February 20, the White House issued an order ending a long list of IEEPA-based import duties that had been imposed under various national-emergency theories. Since then, the administration has been leaning harder on trade statutes that are slower and narrower, but more legally durable. This Section 301 route is one of them. ### Who wants this probe to go hard? A lot of domestic manufacturers do. They want new duties to block what they see as a flood of imports from countries producing too much and exporting the glut. But the coalition is not clean. Import-dependent industries worry about higher input costs, and farm groups worry about retaliation hitting U.S. exports — the same old tariff split, just with a new legal wrapper. ### Why are countries beyond China in the case? Because supply chains moved. Trump’s first-term China tariffs pushed some production into Southeast Asia, Mexico, and elsewhere rather than bringing all of it back to the U.S. So the administration is now looking not just at where a company is headquartered, but where surplus production shows up and gets routed through. That is why the list stretches from China to Malaysia to Mexico. ### What does Malaysia have to do with it? Malaysia shows the diplomatic downside. It had signed a reciprocal trade deal with Washington in October 2025, but by March 2026 Malaysian officials were saying the deal was effectively null after the legal collapse of Trump’s broader tariff program, straining relationships even with countries the U.S. is also courting. ### So what happens next? Greer has said he wants this investigation — and a separate forced-labor-related probe — wrapped by July. That timing matters because a temporary 10% global tariff is due to expire then, so the administration appears to be racing to replace lost leverage with new, more targeted duties. Basically, this is not just about China. The bottom line is simple: the administration is rebuilding its tariff machine piece by piece. China is the main target, but the blast radius is much wider.