Canadian Prime Minister Mark Carney said emphatically Tuesday that Canada is "not for sale" and "won't be for sale, ever" in an Oval Office meeting with President Trump, moments after Mr. Trump called the border between the U.S. and Canada "artificial" and romanticized the idea of Canada joining the U.S.

The Canadian prime minister met with President Trump days after being elected on an anti-Trump platform as relations between the two allies are at a historic nadir.

The Canadian PM responds firmly as the president proposes a "wonderful marriage" of incorporating Canada into the US.