“American Lungs Are Paying the Price”: U.S. Lawmakers Blame Canada for Wildfire Smoke

Republican lawmakers in the United States have intensified their criticism of the Canadian government, blaming it for wildfire smoke that crossed the border and caused dangerous air-quality conditions across Michigan and several parts of the American Midwest and East Coast.

Four Republican members of Congress representing Michigan — Jack Bergman, John James, Lisa McClain and John Moolenaar — sent a joint letter to Canadian Prime Minister Mark Carney, saying their patience with what they described as Canada’s inadequate response to recurring wildfire smoke had run out.

In the letter, dated July 15, 2026, the lawmakers said that “American lungs are paying the price for Canadian inaction year after year,” marking one of the strongest public criticisms issued by U.S. officials over Canada’s wildfire management.

The lawmakers said they had raised the issue with Canadian authorities during previous fire seasons but had not seen sufficient progress in addressing wildfire risks or limiting the amount of smoke reaching the United States.

Their letter accused Canada of failing to invest adequately in forest management measures, including the removal of combustible vegetation and dead trees, the expansion of prescribed burns and stronger enforcement against individuals who deliberately start fires.

Those claims reflect the position of the lawmakers who signed the letter and have not been established as the findings of an independent investigation.

The members of Congress warned that the United States could consider taking unilateral action if Canada does not introduce more effective measures. They suggested that American agencies could become directly involved in reducing forest fuel and expanding firefighting capacity near the shared border.

They also argued that national sovereignty comes with a responsibility to prevent predictable environmental disasters from affecting the airspace and public health of neighbouring countries.

The political pressure has expanded beyond Michigan. Republican Ohio Senator Bernie Moreno said he intended to introduce legislation that could impose penalties on Canada and Canadian officials over the smoke crisis.

Michigan Representative Tom Barrett also raised the possibility of delaying the opening of the Gordie Howe International Bridge between Detroit and Windsor until Canada takes additional action to address the wildfire threat.

The political statements came as air quality deteriorated across parts of Michigan, where weather systems trapped smoke close to the ground.

Health alerts were issued in several major U.S. cities, including Detroit, Chicago, New York and Minneapolis. Residents were advised to reduce outdoor activity and wear high-quality masks when exposure could not be avoided.

By Thursday morning, Canada was dealing with approximately 858 active wildfires, including 111 classified as out of control. Many of the fires were concentrated in Ontario, Manitoba and Saskatchewan.

Detroit was also reported to have recorded some of the poorest air quality among major cities worldwide during the week, as pollution indicators reached unhealthy or hazardous levels in several Canadian and American communities.

The crisis has had an even more direct impact on residents in northern Canada. Hundreds of families, particularly in First Nations communities in northern Ontario, were forced to leave their homes as fires advanced.

Approximately 1,600 people were evacuated from First Nations communities, while the community of Neskantaga near Armstrong was reportedly destroyed within a short period as flames moved rapidly through the area.

Carney responded indirectly to the American criticism by saying that addressing climate change is a responsibility shared by all countries, including the United States.

He pointed to Canadian investment in clean energy and emissions reduction but did not provide a detailed response to each allegation raised by the Michigan lawmakers.

The federal government had previously said it was working with provinces, territories and Indigenous communities while providing new aviation resources, training programs and local emergency-response funding for the wildfire season.

Ottawa has also emphasized that emergency management in Canada is a shared responsibility involving federal, provincial, territorial and local governments.

The growing dispute shows that wildfire smoke is no longer only an environmental and public-health crisis. It is becoming another political pressure point in Canada–U.S. relations, which are already facing increasing disagreements over trade, climate policy and national sovereignty.