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...

The Second Circuit upheld the dismissal of rescue, search, and cleanup workers' substantive due process complaint against federal officials for knowingly issuing false statements about air quality safety in the aftermath of the September 11, 2001, terrorist attacks of the World Trade Center. The wor...

The Ninth Circuit held that yellowfin tuna caught by encircling dolphins with purse-seine nets may not be labeled "dolphin-safe." Environmental groups challenged the Secretary of Commerce's finding that tuna caught with purse-seine nets does not have an adverse impact on dolphin populations. But the...

The Ninth Circuit vacated a lower court decision granting in part and denying in part cross-motions for summary judgment in a case concerning the validity of the federal government's policy for listing killer whales under the Endangered Species Act. Since the lower court issued its decision, the Nat...

A district court held that National Oceanic and Atmospheric Administration-Fisheries (NOAA-Fisheries) did not violate the National Environmental Policy Act (NEPA) when it chose not to prepare an environmental impact statement (EIS) or environmental assessment for its Hatchery Listing Policy (HLP) fo...

The Ninth Circuit affirmed a lower court decision that the Clean Air Act (CAA) does not preempt certain provisions of local "fleet rules" requiring operators to meet specified emission standards or engine requirements, but reversed and remanded the court's refusal to consider whether the CAA preempt...

The Second Circuit affirmed an individual's conviction and sentence for knowingly importing exotic birds, African black sparrowhawks, into the United States in violation of the Wild Bird Conservation Act and for making false statements to the U.S. Fish and Wildlife Service with regard to that import...

The Ninth Circuit vacated as moot a dispute concerning the federal government's policy for listing killer whales under the Endangered Species Act. An environmental group filed suit after the National Oceanic and Atmospheric Administration (NOAA)-Fisheries denied its petition to list the Southern Res...

The Tenth Circuit upheld the constitutionality of Colorado's Clean Indoor Air Act. The Act bans smoking in indoor areas, but it expressly exempts from this general prohibition "airport smoking concessions" such as airport restaurants and bars. A coalition of tavern and bar owners filed suit challeng...

The Ninth Circuit upheld an injunction enjoining the California Air Resources Board from enforcing state regulations that limit emissions from the auxiliary diesel engines of ocean-going vessels within 24 miles of California's coast. Clean Air Act (CAA) §209(e)(2)(A) requires California to obta...