Federal court asks if it should continue hearing Line 5 suit

By Niina H. Farah | 03/13/2025 06:45 AM EDT

A three-judge panel asked for further briefing on whether the court should rule as a similar challenge proceeds in state court.

An aboveground section of Enbridge's Line 5 is seen.

A section of Enbridge's Line 5 at the Mackinaw City, Michigan, pump station is seen Oct. 7, 2016. John Flesher/AP

A federal appeals court is asking if it should hold off on considering a dispute over the Line 5 oil pipeline while a similar challenge plays out in state court.

In a letter seeking additional briefing from the parties in the case, the 6th U.S. Circuit Court of Appeals asked whether the court’s abstention “is appropriate.”

The 6th Circuit cited a 1971 Supreme Court case, Younger v. Harris, which held that a federal court should only intervene in proceedings already in state court when the defendant in the lawsuit will face irreparable harm.

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The letter, filed Monday, came a week before the 6th Circuit will hold a hearing on the dispute between Line 5 developer Enbridge and Michigan Democratic Gov. Gretchen Whitmer.

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