U.S. Court of Appeals for the Sixth Circuit

Rule Changes

Reversed by Supreme Court on April 22, 2026

Two 20-inch oil pipelines have been pumping crude under the Straits of Mackinac since 1953, and Michigan has spent seven years trying to shut them down. On April 22, 2026, the Supreme Court ruled that the company defending the pipelines, Canadian operator Enbridge, gets to fight that battle in federal court, not the state courthouse Michigan picked.

Updated May 31