The court holds that federal sovereign immunity bars an action initiated by the commonwealth of Puerto Rico's environmental agency in an effort to impose restrictions on the U.S. Navy's…

The Court holds that moratoria on development imposed during the process of devising a comprehensive land use plan do not constitute a per se taking of property requiring compensation under the…

The court reverses a district court decision holding that an environmental group's claims against the U.S. Department of Energy (DOE) for failing to comply with the National Environmental…

The court holds that the U.S. Forest Service's environmental impact statement (EIS) for a post-fire logging project on the Six Rivers National Forest violated the National Environmental…

The court holds that an environmental group's claim that the U.S. Department of Defense (DOD) and a state military department violated the National Environmental Policy Act (NEPA) by failing…

The court holds that cemetery owners' takings claims arising from their failure to obtain a Clean Water Act (CWA) §404 permit from the U.S. Army Corps of Engineers are not ripe for review. In…

The court holds that the New York Air Pollution Mitigation Law is preempted by the Clean Air Act (CAA) and violates the U.S. Commerce Clause. Under Air Pollution Mitigation Law §66-k, an electric…

The court affirms a district court decision enjoining federal administrative proceedings on the grounds that the proceedings infringed upon a state's constitutionally protected sovereign…

The court affirms a February 2001, district court order requiring the U.S. Environmental Protection Agency (EPA) to make an air quality attainment status determination for the St. Louis, Missouri…

The court affirms in part and vacates in part a district court order requiring the U.S. Department of the Interior (DOI) to disclose to Maine certain documents relating to efforts to list Atlantic…