Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat

Document 2025-20549 is a Proposed Rule published by the Department of Interior in the Federal Register on November 21, 2025. We, the U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS; collectively, the "Services"), propose to revise portions of our regulations for section 4 of the Endangered Species Act of 1973, as amended (ESA or Act). The proposed revisions to the regulations clarify and interpret portions of the Act concerning the procedures and criteria used for listing, reclassifying, and delisting species on the Lists of Endangered and Threatened Wildlife and Plants and designating critical habitat. View the original at https://www.federalregister.gov/documents/2025/11/21/2025-20549/endangered-and-threatened-wildlife-and-plants-listing-endangered-and-threatened-species-and.

No. Document 2025-20549 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.