Ontario has launched a multimillion-dollar U.S. ad campaign touting economic and cultural ties between the province and its southern neighbour as Canada faces the threat of 25 per cent tariffs enacted by president-elect Donald Trump.

Ontario is launching a U.S. ad campaign, touting the province as an 'ally to the North' ahead of President-elect Donald Trump’s second term and under the threat of tariffs on all Canadian goods.

Canadian Prime Minister Justin Trudeau said Saturday he had an “excellent conversation” with Donald Trump at his Mar-a-Lago club after the president-elect's threat to impose significant tariffs on two of America’s leading trade partners raised alarms in Ottawa and Mexico City.