US HB4255

Removes the Mexican wolf (Canis lupus baileyi) from the federal endangered and threatened species lists under the Endangered Species Act of 1973

Nullifies two U.S. Fish and Wildlife Service final rules: the January 2015 rule establishing endangered status for the Mexican wolf and the July 2022 rule revising the nonessential experimental population designation

Prohibits future Mexican wolf recovery plans or listing decisions from considering the status of Mexican wolves in Mexico, requiring U.S. population criteria to be evaluated independently

Cites population growth of at least 11% in 2024, with 286 documented wild wolves and approximately 350 captive wolves in the U.S. at the end of 2024

References livestock depredation concerns, safety risks to humans and pets, and at least 2 counties declaring public disasters due to Mexican wolf impacts in the Experimental Population Area