Trump's new threat comes on the heels of a previous warning of a 100 percent tariff on goods imported into the U.S. from Canada.

‘Canada lives because of the United States’: Trump takes shots at Mark Carney for being ‘ungrateful’ - President said Canada benefits from U.S. protection, in wide-ranging speech in Davos, Switzerland

U.S.-Canada relations are getting iced over due to a philosophical difference of how international politics should work.

Canadian Prime Minister Mark Carney pushed back Thursday against President Donald Trump’s claim that Canada “lives because of the United States.”

Prime Minister Mark Carney rejected President Donald Trump's claim that "Canada lives because of the United States," declaring Canada "thrives because we are Canadian."

NPR's Ayesha Rascoe speaks to Canadian political journalist Paul Wells about the path ahead for Canada as its interests diverge from those of its neighbor and key trading partner, the U.S..

The US-Canada men's hockey Olympic rivalry, born a century ago, has produced plenty of teeth-clenching drama, but after political tension spilled onto the ice last year, the upcoming Winter Games showdown could serve up the fiercest clash yet.

Donald Trump has threatened Canada with a 50% tariff on any aircraft sold in the US. It is the latest salvo in the US president’s trade war with America’s northern neighbour as his feud with Canadian prime minister Mark Carney expands.

Since the start of the year, as President Donald Trump has alienated U.S. allies with his attack on Venezuela, demands for control of Greenland and new tariff threats, their leaders have been reviving ties with another country: China.