Donald Trump threatened tariffs on Canada for their alleged negligence that resulted in the wildfires that have affected the US

Well-supported — high-quality sources agree

What we can confirm

Multiple reputable reports say Trump blamed Canada for wildfire smoke affecting the U.S. and said the pollution's cost should be added to tariffs on Canadian imports, which matches the substance of the claim. The reports attribute this to a Truth Social post and describe it as a threat to raise tariffs in response to Canada's alleged forest-management negligence.[1][2][3]

Sources

Checked July 18, 2026