As tensions rise ahead of U.S. President Donald Trump’s expected trade tariffs against Canada, Ontario Premier Doug Ford has issued a blunt warning to American states reliant on Ontario’s electricity exports — if tariffs hit Canada,

Newly re-elected Premier Doug Ford doubled down Monday on his threat to cut off electricity flowing from Ontario to several American states if the U.S. moves ahead with tariffs.

Ontario may cut off electricity exports to the United States, Premier of the Canadian Province Doug Ford announced on Monday. Speaking to reporters at a mining convention in Toronto, Ford said the action would be in retaliation for the new tariffs on Canadian goods.