Most of the new duties kicked in Thursday, hitting countries with elevated rates that mark a departure from long-standing trade norms.

President Donald Trump’s tariffs on dozens of nations’ imports took effect early this morning, in a move that could spell higher prices for American consumers and companies. Yet even as tariffs kicked in,

President Donald Trump on Thursday imposed once unthinkably high U.S. taxes on imports from dozens of countries, part of his campaign to turn one of the world's most open economies into a fortress bristling with barriers to trade.