Canadian Prime Minister Justin Trudeau is returning home after his meeting with Donald Trump without assurances the president-elect will back away from threatened tariffs on all products from the major American trading partner.

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

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.