Court Sides with Justice Department by Stopping Michigan from Shutting Down Critical International Pipeline
Saturday, December 20, 2025 - The U.S. District Court for the Western District of Michigan this week granted Enbridge Energy Limited Partnership (Enbridge)’s motion for summary judgment and stopped the State of Michigan from shutting down a critical international pipeline called Line 5. In September, the Justice Department’s Environment and Natural Resources Division (ENRD) and Civil Division filed a statement of interest in the case.
“This ruling by the court reaffirms the federal government’s unique responsibilities in regulating interstate pipelines and enforcing international treaties,” said Principal Deputy Assistant Attorney General Adam Gustafson of the Justice Department’s Environment and Natural Resources Division (ENRD). “If a state exceeds its authority to disrupt the flow of energy, we will step in to re-assert the federal government’s prerogative. President Trump has set America on a strong, winning path toward securing energy dominance. This ruling undergirds that effort.”
In 2020, Michigan tried to shut down the pipeline by moving to stop Enbridge from using an easement, which had allowed the pipeline to run underneath the Straits of Mackinac between Lake Michigan and Lake Huron for decades. The court held that federal law preempts Michigan’s efforts to shut down the pipeline, for two reasons.
First, the Pipeline Safety Act provides exclusive authority to the U.S. Department of Transportation’s Pipeline and Hazardous Materials Safety Administration to set nationwide safety standards for interstate pipelines and related infrastructure. The Act prevents a state from imposing its own safety standards on an interstate (and an international) pipeline. The court concluded that Michigan “unlawfully” attempted to “regulate the safety of Line 5 by attempting to shut it down” and by “‘continuing in force’ numerous state safety standards found” in the easement.
Second, the pipeline is subject to a treaty between the United States and Canada, and the United States has an express policy preference in favor of the uninterrupted flow of oil through international pipelines. And, as the court recognized, a “compelled shutdown of an international pipeline blatantly defies” that federal foreign policy.
Chief of Staff and Senior General Counsel John Adams of ENRD filed the statement of interest.
U.S. Department of Justice
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Source: Justice.gov
