With a deadline looming, Canada is fighting against the closure of the Line 5 pipeline, a 68-year-old pipeline that carries crude oil and natural gas liquids through the Straits of Mackinac and Michigan's governor wants to shut down. In November, Michigan Gov. Gretchen Whitmer (D) announced she was revoking a permit that allows Calgary, Alb.-based Enbridge, Inc. to operate the pipeline, a portion of which runs along the bottom of the straits between Lake Michigan and Lake Huron. Citing concerns over the environmental damage . . .