NEW YORK, July 18 — US President Donald Trump threatened on Friday a tariff increase on Canada to cover the cost of smoke pollution from wildfires that have choked large parts of...

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

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

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