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yesterday

Wildfire Smoke From Canada Chokes U.S. Cities as Trump Threatens Tariffs

Cross-border haze has prompted public-health alerts and a rare trade threat that could strain U.S.-Canada firefighting cooperation and policy talks.

A satellite image shows lingering smoke from Canadian wildfires over multiple regions in North America, July 17, 2026. CSU/CIRA & NOAA/Handout via REUTERS
The U.S. Capitol is seen from a street in Washington Friday as heavy smoke from wildfires shrouds the atmosphere. Smoke from hundreds of Canadian wildfires has spread into parts of the United States, prompting President Donald Trump to criticize Canada’s wildfire response and raise the possibility of new tariffs. (AP Photo/J. Scott Applewhite)
Image
The sun rises behind the U.S. Capitol during a summer heat wave as smoke from wildfires in Canada fills the air.

Overview

  • Hundreds of Canadian fires have sent thick smoke into the U.S., producing hazardous to unhealthy air across the Midwest, Great Lakes, Northeast and Mid-Atlantic and triggering health advisories and event cancellations.
  • President Donald Trump posted tariff threats on Truth Social and said he would raise the economic cost of the smoke on Canada, a step he framed as holding Ottawa responsible for forest mismanagement.
  • Canadian leaders rejected the blame, highlighted mutual aid and firefighting cooperation, and appealed to shared responsibility on climate and emergency response rather than unilateral punishment.
  • The EPA said it will use existing authorities to protect public health, while experts warned that climate-driven hotter, drier conditions and remote boreal terrain limit the reach of fuel-management and suppression tactics.
  • Coverage shows a partisan split in the U.S., with Republican lawmakers pushing sanctions and some outlets emphasizing trade pressure, while other outlets and Canadian officials stress scientific limits, operational constraints and ongoing cross-border cooperation.