The president, who has threatened and delayed other tariffs, said he will announce the new measures Monday. Canada and Mexico are among the U.S.’s top steel suppliers.

President Donald Trump said he plans to impose 25% tariffs on all imports of steel and aluminum, broadening his trade salvos and threatening ties with some of America’s top trading partners.

Mr. Trump’s decision to impose tariffs on metals is not new. In his first term, the president levied tariffs on foreign steel and aluminum globally, angering allies like Mexico, Canada and the European Union. He ultimately rolled back some of those barriers on Canada and Mexico when they signed a revised trade agreement with the United States.

President Trump on Thursday reiterated his plans to put a 25% tariff on imports from Mexico and Canada, where automakers build many of their products for sale in the US. Ford CEO Jim Farley believes Trump’s tariff gambit will be a policy issue that extends beyond February, however, but said that Ford has had a gameplan in place.

President Donald Trump says he will also impose "reciprocal tariffs" on any countries who place tariffs on the US.

President Trump said he'll announce 25% tariffs on steel and aluminum imports on Monday and "reciprocal tariffs" later this week.

U.S. President Donald Trump said on Sunday he will introduce new 25% tariffs on all steel and aluminum imports into the U.S., on top of existing metals duties, in another major escalation of his trade policy overhaul.