The Fifth Circuit affirmed a lower court decision dismissing an environmental restoration company's lawsuit against the U.S. Army Corps of Engineers for building new wetlands without considering whether it should buy mitigation credits from the company. The company, which invests in projects that re...

The D.C. Circuit upheld EPA's 2012 regional haze rule, which seeks to restore air quality and visibility in certain national parks and wilderness areas to what they would be under natural conditions. The rule requires states to impose best available retrofit technology (BART) on certain stationary p...

The D.C. Circuit granted in part and denied in part petitions concerning EPA's NESHAPs for industrial boilers. The first challenge raised by environmental groups concerned regulations that indirectly control a group of organic pollutants by limiting carbon monoxide emissions as a proxy for the targe...

The Fifth Circuit stayed a preliminary injunction that barred a company from constructing a crude oil pipeline through the environmentally sensitive Atchafalaya Basin. An environmental group claimed that the U.S. Army Corps of Engineers unlawfully issued a permit allowing the construction, and a low...

In a 259-page opinion, a federal claims court held that the U.S. Army Corps of Engineers is responsible for causing recurrent flooding along the Missouri River. Farmers, landowners, and business owners filed takings claims against the government, arguing that the Corps' management of the Missouri Ri...

The U.S. Supreme Court held that the United States may pursue claims against New Mexico for violating the Rio Grande Compact, which Colorado, New Mexico, and Texas entered into in the 1930s to resolve disputes over water rights. Texas filed suit alleging that New Mexico was allowing its residents to...