The U.S. Constitution gives the power to impose taxes — including tariffs — to Congress. But lawmakers have gradually relinquished power over trade policy to the White House. And Trump has made the most of the power vacuum, raising the average U.S. tariff to more than 18%, highest since 1934, according to the Budget Lab at Yale University.

The U.S.-EU trade agreement imposes 15 percent tariffs on most European imports, avoiding the 30 percent levies that President Trump had threatened. Critics argue the deal disproportionately favors