Cross-border smoke draws political fire over forest management

Smoke from Canadian wildfires blankets multiple U.S. states, triggering health warnings as Trump and GOP lawmakers blame Canada’s forest management for the haze; climate experts say worsening conditions reflect climate change and an extreme North American heat wave. Canada says it is a shared challenge and continues firefighting cooperation, while some Republicans push sanctions. Health officials warn wildfire particulate matter poses serious short- and long-term risks to vulnerable populations.