President Donald Trump said Friday he’s holding Canada responsible for wildfire smoke hovering over much of the Midwestern and eastern United States and vowed to call Prime Minister Mark Carney, suggesting that the “cost of this pollution” could be added to tariffs Canada is already paying.

Trump accused Canada of “willful negligence” and failing to properly maintain their forests.

Donald Trump has threatened to impose tariffs on Canada over wildfire smoke that is choking US cities.

Trump blamed Canada for wildfire smoke and called for more tariffs, accusing the country of mismanaging its forests.