Enbridge Energy, LP v. Nessel: Date Argued - 24th February, 2026

Case Summary:On February 24, 2026, the Supreme Court heard oral arguments in Enbridge Energy, LP v. Nessel, a case that could determine the fate of the controversial Line 5 pipeline through a technical dispute over court deadlines.The litigation began in 2019 when Michigan Attorney General Dana Nessel sued in state court to shut down a segment of the Enbridge pipeline running beneath the Straits of Mackinac, citing environmental risks. Nearly 30 months into the state court proceedings, Enbridge attempted to "remove" the case to federal court—far beyond the standard 30-day statutory deadline for such moves.Core Legal IssuesThe central question before the Court is whether the 30-day deadline for removing a case from state to federal court (28 U.S.C. § 1446(b)) is a rigid, mandatory rule or if district courts have the "equitable" authority to extend it in exceptional circumstances.Enbridge argues that the deadline functions like a statute of limitations and should be subject to "equitable tolling," allowing a judge to excuse a late filing if the federal interests are significant enough. Michigan contends that the deadline is a firm procedural requirement designed to prevent "forum shopping" and that allowing exceptions would cause unpredictable delays in state-level litigation.Highlights from Oral ArgumentThe Forum Stakes: Several justices noted that the choice of court is pivotal; federal courts are generally viewed as more sympathetic to Enbridge’s arguments regarding federal safety preemption, while state courts are seen as more likely to favor Michigan's environmental protection claims.Justice Sotomayor’s Skepticism: Justice Sonia Sotomayor pointed out that unlike a statute of limitations where a late filing might end a case entirely, a late removal just means the case stays in state court. She questioned if Enbridge was truly "losing" any rights, or simply losing its preferred venue.International Implications: Justice Samuel Alito expressed concern over the potential for "severe" diplomatic fallout with Canada if a state court were to order the pipeline shut down, suggesting this broader context might justify federal court oversight.The "Clear Command" Debate: The argument heavily featured the "clear statement rule." Michigan’s Solicitor General argued that Congress’s inclusion of specific, narrow exceptions in the statute proves that it did not intend for judges to create their own "equitable" loopholes.What Happens NextThe Supreme Court is expected to rule by June 2026. If Enbridge wins, the case will likely move back to federal court, where the pipeline is more likely to remain operational. If Michigan wins, the case will proceed in state court, bringing the Attorney General one step closer to her goal of decommissioning the Line 5 segment.