The court affirms a district court decision requiring the U.S. Fish and Wildlife Service (FWS) to prepare an environmental impact statement (EIS) and to issue a critical habitat designation for the Rio Grande Silvery Minnow within 120 days. In 1994, the minnow was listed as an endangered species. FW...

The court denies a petition for review seeking reversal of the U.S. Environmental Protection Agency (EPA) Administrator's decision not to object to a state agency's determination that the heightened permitting requirements of the prevention of significant deterioration (PSD) program do not apply to ...

The court holds that the federal government failed to show how limiting permits for eagle feathers only to members of federally recognized tribes is the least restrictive means of advancing the government's interests in preserving eagle populations and protecting Native American culture. An individu...

The court holds that the National Marine Fisheries Service (NMFS) failed to satisfy the Atlantic Coastal Fisheries Management Act's (Atlantic Coastal Act's) consultation requirement before promulgating a final rule governing lobster fishing in the exclusive economic zone (EEZ) off the U.S. Atlantic ...

The court holds that application of the Endangered Species Act (ESA) to a commercial housing development that threatened the continued existence of the arroyo southwestern toad, an endangered species, was a constitutional exercise of federal authority under the U.S. Commerce Clause. The court previo...

The court rejects a timber company's Declaratory Judgment Act claim against two private environmental groups, the U.S. Fish and Wildlife Service (FWS), and the National Marine Fisheries Service (NMFS). The environmental groups filed a notice of intent to sue the FWS and the NMFS under the Endangered...

The court affirms a district court holding that the Clean Air Act (CAA) does not preempt California's ban of the use of methyl tertiary butyl ether (MTBE) in oxygenated fuel. CAA §211(c)(4)(A) preempts state regulation of fuel for purposes of motor vehicle emissions, but California is exempt fr...

The court held that a 2002 U.S. Environmental Protection Agency (EPA) rule specifying that Nevada was divided into more than 250 baseline areas for the Clean Air Act (CAA) prevention of significant deterioration (PSD) program was not arbitrary or capricious. Based on an ambiguous 1991 EPA regulation...

The court upholds the U.S. Fish and Wildlife Service's (FWS') determination that listing the northern goshawk in the western United States as a threatened or endangered species was not warranted under the Endangered Species Act. The FWS' decision was amply supported by evidence in the record. Based ...

The court affirms a district court decision that New York Air Pollution Mitigation Law §66-k is preempted by the Clean Air Act (CAA) Title IV cap-and-trade system and violates the Supremacy Clause of the U.S. Constitution. Section 66-k requires the assessment of an air pollution mitigation offs...