11:40 AM EDT, 04/22/2026 (MT Newswires) -- (Updates with Enbridge's response in the fourth paragraph.)

The US Supreme Court on Wednesday rejected Enbridge's (ENB) motion to move a lawsuit seeking to halt the company's operation of the Line 5 pipeline from Michigan state court to federal court.

The attorney general for the state of Michigan filed the lawsuit in June 2019 in state court seeking to block Enbridge from operating the 645-mile-long pipeline that runs from northwestern Wisconsin through Michigan and into Canada.

"The Court of Appeals therefore correctly held that Enbridge's notice of removal was untimely and that this action must be remanded to the Michigan state court,"said Justice Sonia Sotomayor, who delivered the opinion for the court. "The judgment of the Court of Appeals is affirmed."

"Setting aside the procedural decision, the fact remains that the safety of Line 5 is regulated exclusively by the Pipeline and Hazardous Materials Safety Administration,"Enbridge said in an emailed statement to MT Newswires. "PHMSA conducts annual inspections and reviews of Line 5's operations across the Straits of Mackinac and has consistently found the pipeline to be in compliance, identifying no safety issues that would warrant its shutdown."

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