The court holds that a solid waste flow control requirement imposed by a 22-county waste authority in Mississippi violates the Commerce Clause of the U.S. Constitution. The authority required waste haulers to deliver collected materials to a designated publicly owned facility. The ruling in United H...

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 holds that real estate developers who voluntarily participated in U.S. Department of Housing and Urban Development (HUD) low-income housing programs suffered a compensable, temporary, regulatory taking under the Fifth Amendment when the U.S. Congress enacted the Emergency Low-Income Housin...

The court holds that a trial court erred in its determination that real estate developers who claimed that the government's enactment of legislation relating to low-income housing programs that breached contracts between the developers and the United States did not possess protectible real property ...

The court holds that the Safe Drinking Water Act (SDWA), in requiring the U.S. Environmental Protection Agency (EPA) to promulgate national primary drinking water regulations, is a valid exercise of power under the U.S. Commerce Clause. Petitioners argued that the SDWA exceeds the federal government...

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 dismissal of a property owner's inverse condemnation action against the state of Rhode Island for acquiring a portion of his property in 1975 by adverse possession. Because the owner failed to seek compensation through the state court, he forfeited his federal claim. Adequate s...

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...

The court holds that an electric utility violated the Clean Air Act (CAA) when it completed 11 construction activities that modified a coal-fired electric-generating facility without first calculating post-construction emissions and obtaining preconstruction CAA prevention of significant deteriorati...

The court holds that §21 of Article XVII to the South Dakota Constitution, which prohibits corporations or syndicates from acquiring or obtaining an interest in land used for farming and from otherwise engaging in farming in South Dakota, violates the dormant U.S. Commerce Clause of the U.S. Co...