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Challenge to the the U.S. Fish and Wildlife Service’s 2022 determination that listing of the Sonoran desert tortoise as endangered or threatened under the Endangered Species Act was not warranted.

Lawsuit to compel determination as to whether the Railroad Valley toad warrants listing as endangered or threatened.

Lawsuit to compel issuance of an initial determination on an April 2024 petition to list the gray cat’s eye under the Endangered Species Act.

Lawsuit to compel disclosure of non-email records documenting EPA’s recommendations to the Office of Management and Budget Director regarding the 2009 endangerment finding for greenhouse gases under the Clean Air Act.

Geography

Arizona

Recent cases