There are Supreme Court decisions that arrive with fanfare, and then there are those that quietly rearrange the legal landscape in ways that only become obvious after the dust settles. Today’s decision in Chevron USA Inc. v. Plaquemines Parish belongs firmly in the latter category. It is not packaged as a climate case. It does not speak in the language of emissions targets or environmental urgency. Yet it strikes directly at the legal machinery that has been driving a large portion of modern climate litigation.