DETROIT, MI (AP)— Canada is getting deeply involved in a dispute over the Line 5 oil pipeline in Michigan.
Canada informed a judge that it is invoking a 1977 treaty with the United States. That step should suspend a lawsuit by Michigan to shut down the pipeline.
Line 5 is operated by Enbridge. It runs from Wisconsin to Michigan to Ontario. A section of the pipeline is in the Straits of Mackinac.
Governor Gretchen Whitmer and Attorney General Dana Nessel say Line 5 is risky and should be shut down. Enbridge plans to build an underwater tunnel to protect the pipeline under a deal made with Whitmer's predecessor, Governor Rick Snyder.