On February 7, 2024, the U.S. Environmental Protection Agency (EPA) announced a final rule imposing a stricter limit for the fine particulate matter (PM2.5) national ambient air quality standard (…

The Inflation Reduction Act (IRA) of 2022 added seven new sections to the Clean Air Act (CAA) and provided the U.S. Environmental Protection Agency (EPA) with substantial new authorities and…

On October 29, 2021, the U.S. Supreme Court granted certiorari in West Virginia v. Environmental Protection Agency, a petition filed by several states and coal companies attacking the U.S…

On the final day of the 2021-2022 term, the U.S. Supreme Court released its decision in West Virginia v. Environmental Protection Agency. The majority (6-3) opinion limited the U.S.…

In 2009, when carbon dioxide (CO2) levels were at 387.43 parts per million, the Center for Biological Diversity and 350.org submitted a citizen petition calling on the U.S. Environmental…

Over the past 50 years, tremendous progress has been made in reducing air pollution under the Clean Air Act. Nevertheless, while air quality has improved greatly for much of the nation, there are…

Two carbon pricing bills were introduced during the 115th Congress. Reps. Carlos Curbelo (R-Fla.) and Brian Fitzpatrick (R-Pa.) introduced the MARKET CHOICE Act during the summer of 2018. Reps.…

Editor's Summary: In 2003, the U.S. Supreme Court issued its most recent pronouncement on the executive foreign affairs preemption doctrine in American Insurance Ass'n v. Garamendi. In this…

In Alaska Department of Environmental Conservation (ADEC) v. U.S. Environmental Protection Agency, the U.S. Supreme Court narrowly upheld orders issued by the U.S. Environmental Protection Agency…

Environmentalists are no strangers to disappointment in the U.S. Supreme Court, but the recent case of Solid Waste Agency of Northern Cook County v. U.S. Army Corps of Engineers (…