An 8-0 decision moves a $740 million coastal damage lawsuit from state to federal court.
The Supreme Court handed oil and gas companies a significant legal victory Today, ruling unanimously that Chevron can move its fight against a Louisiana coastal damage lawsuit from state court into federal court. The 8-0 decision overturns a 2024 ruling from the U.S. Court of Appeals for the Fifth Circuit that had allowed the case to remain in state court.
The ruling carries consequences well beyond this single lawsuit. Attorney John Carmouche, who represents local Louisiana leaders pursuing the litigation, said the decision will affect roughly a quarter of the dozens of similar lawsuits filed against various oil companies since 2013. Federal courts are widely regarded as a more favorable venue for corporate defendants than state courts, and that distinction is precisely what made the jurisdictional question so consequential.
The case and its origins
The litigation traces back to a Plaquemines Parish jury finding that Texaco, which Chevron acquired in 2001, had spent decades violating Louisiana coastal resource regulations. The alleged violations included failing to restore wetlands after dredging canals, drilling operations, and the discharge of billions of gallons of wastewater into marsh areas. That jury ordered Chevron to pay more than $740 million to address damage to the state’s coastline.
Chevron and other oil companies argued the case belongs in federal court because their Louisiana operations began during World War II as work performed under federal supervision to rapidly increase aviation fuel supplies for the U.S. government. The Trump administration backed that position. Justice Clarence Thomas, writing for the eight-justice majority, agreed that Congress has long permitted lawsuits involving government contractors to be heard in federal court, and that the connection between the wartime work and the current claims was clear enough to satisfy that standard. Justice Samuel Alito recused himself due to financial ties to ConocoPhillips.
Louisiana’s shrinking coastline
The scale of what is at stake environmentally gives the legal fight its weight. Louisiana’s coastal parishes have lost more than 2,000 square miles of land over the past century, according to the U.S. Geological Survey, which has also identified oil and gas infrastructure as a meaningful contributor to that loss. The state’s coastal protection agency has warned that an additional 3,000 square miles could disappear in the coming decades, leaving communities increasingly exposed to hurricane storm surge and flooding.
The litigation has crossed the political lines that typically define Louisiana’s energy debates. The jury verdict against Chevron came from Plaquemines Parish, one of the most conservative and traditionally pro-energy communities in the state. Republican Gov. Jeff Landry, a longtime ally of the oil and gas industry, supported the lawsuits during his time as attorney general. Republican Attorney General Liz Murrill noted the unusual dynamic publicly in the wake of the ruling.
Reactions from both sides
Chevron welcomed the decision, describing the lawsuits as involving work performed under federal oversight and saying it looks forward to litigating the cases in what it considers the appropriate venue. The company has consistently denied responsibility for Louisiana’s land loss and maintained that holding companies liable for activity that predated state environmental regulations is fundamentally unfair.
Local leaders and environmental advocates framed the ruling as a procedural detour rather than a defeat. Carmouche said the change in venue would not slow the effort to hold the oil industry financially responsible for coastal restoration. Anne Rolfes of the Louisiana Bucket Brigade described it as a setback but not a stop to accountability efforts, pointing to the canals and pipelines that have carved through natural coastal barriers and left residents more exposed to severe weather.
Industry groups took a stronger position, with Grow Louisiana calling on the courts to end the litigation entirely and the Louisiana Association of Business and Industry describing the ruling as a win for legal clarity.