Trump has made clear he will use tariffs — many of which he can enact without Congress’ approval — to an unprecedented degree as a bludgeon against allies and rivals alike to achieve domestic and foreign policy goals. Rising inflation as tariffs result in higher prices on imports such as cars, electronics, food, and clothing.

Trump, who takes office on Jan. 20, said he would impose a 25% tariff on imports from Canada and Mexico until they clamped down on drugs, particularly fentanyl, and migrants crossing the border, in a move that would appear to violate a free-trade deal.

The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.

Mexico and Canada are two of America's biggest trading partners, shipping everything from energy and vehicles to machinery and electronics to the US.

The president-elect's threat comes just days after he threatened big tariffs on Mexico, Canada and China. Experts warn of higher prices.

Trudeau flew to Florida on Friday evening and had dinner with Trump at his Mar-a-Lago residence, days after Republican Trump had pledged to impose tariffs on Canadian and Mexican imports after he is sworn in as president in January.

Canadian Prime Minister Trudeau flew to Trump's Florida home after the president-elect’s threat to impose significant tariffs on Canada and Mexico.

Donald Trump's latest tariff threat is focusing attention on the threat posed by fentanyl and its precursors. But stifling the drug trade by trying to control the trade in precursors is a frustrating and not very effective approach that has failed to produce the desired results in the past.

President-elect Trump’s pledge to impose tariffs on Mexico and Canada threatens to upend decades of North American integration, a bumpy process that’s recast the two U.S. neighbors as providers of raw and finished goods for the world’s biggest economy.

Donald Trump said Saturday that a surprise meeting with Canadian Prime Minister Justin Trudeau in Florida was "very productive," days after the incoming US leader rattled Ottawa with a vow