JD Foster is the former chief economist at the Office of Management and Budget and former chief economist and senior vice president at the U.S. Chamber of Commerce. He now resides in relative freedom in the hills of Idaho.

Mr. Trump announced last week that vehicles and auto parts imported into the U.S. will be subject to a 25% tariff rate. The auto tariffs are expected to go into effect at midnight, just hours after the latest round of tariff announcements by the president Wednesday afternoon.