Enbridge Energy, LP v. Nessel

Michigan is trying to revoke an easement (a legal right to use land) and shut down the Line 5 oil pipeline due to environmental concerns in the Straits of Mackinac. Enbridge Energy argues that federal pipeline safety laws prevent the state from taking this action. The Supreme Court is deciding if federal law preempts (overrides) Michigan's authority to close the pipeline.

The outcome will determine if states have the power to shut down major energy infrastructure for environmental reasons. A ruling against Michigan could make it harder for states to regulate existing pipelines that cross their land. This affects energy prices in the Midwest and the risk of oil spills in the Great Lakes.

This case sits at the intersection of state environmental protection and federal control over interstate commerce. It tests the limits of the Pipeline Safety Act and how much control the federal government has over energy transport. It also involves international relations because the pipeline carries oil between the U.S. and Canada.

During oral arguments, the discussion focused on whether federal safety standards leave any room for state property laws to shut down a pipeline. The justices also explored whether district courts have the authority to excuse the 30-day procedural time limit for moving cases from state to federal court.

The Court must decide if federal safety laws or state property rights win in the battle over the Line 5 pipeline.

The Supreme Court has finished hearing oral arguments and is now drafting a written opinion. A final decision is expected by the end of the term in June 2026. Until then, the pipeline continues to operate under the existing federal and state framework.

Michigan wants to shut down the Line 5 pipeline to protect the Great Lakes from potential oil spills. Enbridge argues that only the federal government, not the state, has the legal power to regulate pipeline safety.

Closing the pipeline could disrupt the supply of petroleum products to Michigan, Wisconsin, and Ontario. This might lead to higher fuel prices and changes in how energy is transported across the region.

The Court is looking at whether federal pipeline safety law preempts (takes priority over) state laws. They are also deciding if courts can excuse the 30-day deadline for moving a case to federal court.

The justices will vote in private and assign a member of the Court to write the official opinion. The public will not know the result until the final written decision is released.

This case is part of a larger trend of legal battles between state leaders and energy companies over environmental safety. It highlights the ongoing tension between local land protection and national energy needs.