Michigan Governor Gretchen Whitmer and the director of the state's Department of Natural Resources revoked Enbridge's easement for the operation of the twin Line 5 pipeline last November, citing repeated violations of the easement and the need to protect the Great Lakes. Michigan's notice required Enbridge to cease operations of the pipelines in the Straits of Mackinac by May of 2021. Ten days after the state's notice, Enbridge filed a federal complaint at a U.S. district court seeking an injunction to stop Michigan's order for closure of the Line 5 pipeline, arguing that the state's shutdown order violates U.S. federal law and the Constitution.