Canada is now experiencing the effects of US wildfires, with air quality warnings issued in British Columbia due to smoke drifting north. This comes shortly after Donald Trump threatened Canada with tariffs, alleging improper fire management practices. Officials report the smoke is a result of fires spurred by thousands of lightning strikes in the north-eastern United States. Major US cities have already been battling smoke from Canadian wildfires for days. The situation highlights the cross-border impact of increasingly frequent and intense wildfires. This reciprocal impact underscores the interconnectedness of environmental issues between Canada and the United States. The current alerts serve as a warning to Canadian residents about potential health risks.