Ontario Premier Doug Ford said US criticism of Canadian efforts to stop the "terrible scenario" of spreading forest fires in his province and choking smoke across a broad swath of the United States was "absolutely unacceptable."

Donald Trump appears to believe Canada sent wildfire smoke to the United States on purpose.

Toronto continues to be choked by smoke from wildfires that have devastated communities in northwestern Ontario.

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