Alberta Premier Danielle Smith said the oil-producing region could look beyond the U.S. for customers if Trump's tariff threats create uncertainty.

President Donald Trump said he will double the tariffs imposed on steel and aluminum imported from Canada after the province of Ontario announced surcharges on electricity going into New York, Minnesota and Michigan.

President Donald Trump backed down from an extraordinary trade war escalation Tuesday that had threatened a massive surge in Canadian steel and aluminum tariffs and new tariffs on Canadian electricity.