Trump Tariffs Push for ‘American-Made’ Cars—But They Don’t Exist

The Trump administration claims that its incoming 25 percent tariffs on foreign cars and auto parts will boost business for vehicles made entirely in the U.S. But such all-American cars don’t exist—and they probably never will, according to industry experts.

Given that U.S. carmakers today source many of a vehicle’s roughly 30,000 parts from abroad, the prospect of shifting to a completely domestic supply chain is highly unlikely. “It won’t happen,” Stephanie Brinley, a principal automotive analyst at S&P Global Mobility...