Former central banker Mark Carney was sworn in as Canada’s new prime minister on Friday, and will now try to steer his country through a trade war brought by U.S. President Donald ...

President Donald Trump continued to belittle Canada and threaten it with joining the United States as the economic war with the country continued.

Carney, 59, will take the reins of his country at a time when it is locked in a trade war with the U.S., its largest trade ...