The U.S. Supreme Court has unanimously ruled in favor of Michigan Attorney General Dana Nessel in a significant case concerning the aging Line 5 energy pipeline. The Court determined that the state has the jurisdiction to handle the lawsuit regarding the pipeline, which runs beneath the Straits of Mackinac. This decision comes after Enbridge Energy, the company operating the pipeline, attempted to move the case to federal court, but the Supreme Court rejected this challenge. The ruling is seen as a substantial win for Michigan, though concerns remain about environmental risks associated with the pipeline, and further legal battles are expected.