This week the US District Court for the Northern District of California overturned three Endangered Species Act (ESA) rules issued in 2019 that address: (1) listing species and designating critical habitat, (2) extending take prohibitions to threatened species, and (3) § 7 interagency consultation. Center for Biological Diversity v. Bernhardt, 19-05206 (N.D. Cal. July 5, 2022). The three rules were issued by the US Fish and Wildlife Service and National Marine Fisheries Service (together, the Services) in August 2019 and together represented the first comprehensive revisions to the ESA regulations in 33 years. The order has a number of important regulatory and caselaw implications.