Trump threatens Canada with tariffs over wildfire smoke

Jul 17, 2026

President Trump is threatening Canada with tariffs over smoke from more than 900 wildfires causing hazardous air quality in the U.S. Trump and other Republicans, like Sen. Bernie Moreno who proposed sanctions, blame Canada for mismanaging its forests. Canadian officials and environmental groups counter that climate change is the root cause and call the U.S. response unhelpful and based on false rhetoric.

Trump tariff threats

▪President Donald Trump threatened to impose tariffs on Canada in retaliation for smoke from Canadian wildfires affecting the U.S.
▪Trump stated the cost of the pollution must be added to existing tariffs Canada is paying.
▪On July 17, 2026, Trump posted on Truth Social that the U.S. is being "invaded by filthy, polluted, and unhealthy air."
▪Trump accused Canada of "Willful Negligence" for not properly maintaining its forests and brush.

Moreno sanctions bill

▪The bill also proposes declaring the Canadian ambassador "persona non grata" until the smoke no longer affects the U.S.
▪Sen. Bernie Moreno blamed "Canada's failed leadership" for Ohio experiencing its "worst pollution on record."
▪Moreno's proposed bill would revoke visas, block assets, and impose financial restrictions on sanctioned individuals.
▪Sen. Bernie Moreno (R-Ohio) introduced a bill to sanction Canadian officials deemed responsible for the wildfires.

Wildfire climate science

▪John Walke of the Natural Resources Defense Council noted that for decades, Ohio coal-burning power plants have sent pollution into eastern Canada.
▪Environmental experts attribute the fires to climate change, which has dried out Canada's forests, combined with lightning and human activity.
▪As of July 17, 2026, Canada had over 900 wildfires, with more than 120 burning out of control.

Republican climate denial

▪Environmental groups described the Republican proposals as "meritless" and an attempt to distract from the climate crisis.
▪In a 2025 speech to the United Nations, President Trump referred to climate change as a "con job."
▪Four Republican lawmakers from Michigan wrote a letter to Prime Minister Mark Carney claiming Canada has the tools to prevent the fires but has chosen not to.

Canadian response

▪Ontario Premier Doug Ford said U.S. politicians should send support rather than complain, noting Canada has previously helped the U.S. with fires.
▪U.S. Ambassador to Canada Pete Hoekstra called the wildfires a "shared challenge" and commended the cooperation between the two nations.
▪Canadian Prime Minister Mark Carney stated on July 16, 2026, that climate change is the responsibility of all countries, including the U.S.