If the US imposes import taxes as the president has threatened, its neighbour is mulling a range of responses.

Trump initially claimed his 25 per cent tariff threat was in response to what he called the failure by Canada and Mexico to curb the illegal flow of people and drugs across the border.

A trio of federal cabinet ministers is in Washington today making a last-ditch attempt to stop U.S. President Donald Trump from imposing economically devastating tariffs on Canadian imports. Foreign ...