US President Donald Trump has threatened to impose higher tariffs on Canada, blaming the country for wildfire smoke that has severely impacted air quality across large parts of the United States. Trump accused Canada of poor forest management and argued that the economic cost of the pollution should be reflected in increased tariffs. Meanwhile, Canadian officials defended their wildfire response, highlighting ongoing cooperation with the US and billions invested in forest sustainability and fire prevention. With nearly 1,000 active wildfires burning across Canada, air quality alerts remain in effect across several US cities, raising public health concerns.