The president claims the measures will help autoworkers. But experts say that’s far from certain—and that they could tank the industry instead.

Much of what President Trump said during his tariff announcement last week was true. Over several decades, the U.S. has offshored millions of manufacturing jobs. Offshoring to countries like China and Mexico allowed American companies to benefit from cheap labor, while still satiating American consumers' appetites with high-quality goods.