The D.C. Circuit denied an environmental group's petition for review of U.S. Environmental Protection Agency (EPA) air quality regulations governing the exclusion of emissions data from state reporting requirements during exceptional events such as natural disasters. The rule allows states to list s...

A district court set aside the U.S. Fish and Wildlife Service's (FWS') decision not to designate critical habitat or to prepare a recovery plan for the jaguar. The FWS' critical habitat designation determination was not based on the best scientific evidence available and was inconsistent with the st...

A district court held that environmental groups' citizen suit against the Tennessee Valley Authority (TVA) for violating the Clean Air Act, the Tennessee state implementation plan, and related regulations in conjunction with its operation of coal-fired power plant in Bull Run, Tennessee, must procee...

The court holds that the U.S. Fish and Wildlife Service's (FWS') decision not to designate critical habitat for the stickleback is not arbitrary and capricious, and that the FWS is not required to ensure compliance with federal and state laws before issuing an incidental take statement to a company ...

The court rejects landowners' request for a declaratory judgment challenging the U.S. Fish and Wildlife Service's (FWS') determination that their land could not legally be used for goose hunting. FWS regulations prohibit the taking of migratory birds by the aid of baiting or on or over any baited ar...

The court holds that the Migratory Bird Treaty Act (MBTA) and its implementing regulations do not preempt Arkansas regulations governing captive-reared mallard ducks. Captive-bred ducks do not fall within the MBTA's scope of federal permitting requirements, and nothing in the MBTA prohibits a state ...

The court affirmed a lower court decision denying a motion for preliminary injunction that would require the protection of mute swans under the Migratory Bird Treaty Act. The Act, which implements the migratory bird conventions, makes it unlawful to hunt or kill migratory birds native to the United ...

A district court held that the Animal and Plant Health Inspection Service (APHIS) arbitrarily and capriciously denied petitions to list certain genetically engineered varieties of grasses as noxious weeds under the Plant Protection Act. APHIS' insistence that international obligations require that p...

The court held that a U.S. Fish and Wildlife Service (FWS) incidental take statement authorizing the taking of all northern spotted owls associated with certain proposed timber harvests in the Pacific Northwest is invalid. As a result of a prior court opinion, the FWS voluntarily reinitiated consult...

The Court reversed the Fourth Circuit's grant of summary judgment in favor of a coal-fired power plant operator charged with violating the Clean Air Act's (CAA's) prevention of significant deterioration (PSD) regulations. The CAA's PSD and new source performance standards (NSPS) provisions both cove...