Chrystia Freeland, who is also minister of finance, says country faces ‘grave challenge’ from Trump policy

Canada’s deputy prime minister and minister of finance has resigned amid growing tensions with the prime minister, Justin Trudeau, over the looming threat posed by Donald Trump’s “America First” economic nationalism.

Chrystia Freeland stood down on Monday, just hours before she was due to release the country’s first economic plan ahead of the change of administration in Washington.