President Donald Trump said he is serious about wanting Canada to become the 51st state in an interview that aired Sunday during the Super Bowl preshow.

President Trump has repeatedly suggested Canada would be better off if it agreed to become the 51st U.S. state.

The American president said the Canada-U.S. boundary could disappear when he spoke with the prime minister Monday, according ...

The Canadian prime minister reportedly thought the media left the room when he weighed in on the U.S. president's threats.