Six Republican lawmakers have sent a letter to Canada’s ambassador calling for action on the wildfires sending smoke billowing across the international border into their states. In a Tuesday letter to Ambassador to the U.S. Kirsten Hillman, representatives Tom Tiffany, Brad Finstad, Tom Emmer, Michelle Fischbach, Glenn Grothman and Pete Stauber of Wisconsin and Minnesota said their constituents are coping with suffocating smoke from Canadian wildfires. “As we are entering the height of the fire season, we would like to know how your government plans on mitigating wildfires and the smoke that makes its way south,” the letter said. The lawmakers said successive years of wildfires in Canada have undermined air quality in their states and robbed Americans of their ability to enjoy the summer. They pointed to forest management and arson as possible factors behind the fires. They did not mention climate change. The lawmakers urged Hillman to relay their concerns to Ottawa, in particular to N...