OTTAWA — Prime Minister Justin Trudeau on Thursday singled out Alberta Premier Danielle Smith as being the only provincial leader to act against Canada’s national interest, after she refused to sign a statement supporting the country’s approach to incoming U.S. president-elect Donald Trump’s threat of tariffs.

Prime Minister Justin Trudeau says all of the country's premiers - except for Alberta Premier Danielle Smith - chose put Canada first when it comes to the country's response to Donald Trump's threat to impose a 25 per cent tariff on Canadian goods.