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.

EDINBURGH, Scotland (AP) — The United States and the European Union agreed on Sunday to a trade framework setting a 15% tariff on most goods, staving off — at least for now — far higher import duties on both sides that might have sent shock waves through economies around the globe.