A district court denied the Biden Administration's motion to stay an ongoing climate change lawsuit brought by 21 young people. The U.S. government argued the suit must be stayed because there was a substantial likelihood the Ninth Circuit would grant its petition for mandamus. The court found the g...

The Ninth Circuit granted the Biden Administration's mandamus petition to dismiss an ongoing climate change lawsuit brought by 21 young people. Plaintiffs initially argued that the U.S. government, by failing to adequately respond to the threat of climate change, violated a "right to a stable climat...

The Fifth Circuit rejected an environmental group's challenge to the Louisiana Department of Environmental Quality's (LDEQ's) decision to issue preconstruction permits for a liquefied natural gas export facility in Cameron Parish. The group sought to have LDEQ's decision vacated, arguing the facilit...

The D.C. Circuit upheld EPA's 2022 decision to reinstate a prior waiver of federal preemption of two California regulations concerning automobile emissions under the CAA. States and fossil fuel groups challenged the regulations—a standard limiting greenhouse gas emissions and a requirement that a ...

The D.C. Circuit, 2-1, granted in part and denied in part petitions to review EPA's SIP call for 35 states and the District of Columbia. A group of about half these states as well as companies subject to those SIPs sued, arguing EPA misinterpreted its authority under the CAA when it called for SIPs ...

The Fourth Circuit affirmed a district court order remanding to state court two climate deception lawsuits against oil and gas companies. City and county governments in Maryland initially sued in state court, alleging the companies used and promoted fossil fuel products while knowing, concealing, an...

A district court granted the state of Vermont's motion to remand to state court a climate misinformation suit brought against fossil fuel companies. The state initially sued in state court, arguing the companies violated the Vermont Consumer Protection Act by failing to inform consumers about the im...

The Fifth Circuit, 2-1, denied petitions to review EPA's 2016 designation of two counties in Texas as nonattainment for the 2010 sulfur dioxide NAAQS. The state of Texas and the owner of a power plant located in one of the counties sought to have the designation vacated, arguing it violated the CAA ...

The Fourth Circuit, 2-1, granted West Virginia's motion to stay EPA's disapproval of its SIP addressing "good neighbor" obligations under the revised 2015 air quality standards for ozone. EPA's disapproval found the state would still contribute significantly to nonattainment or interfere with mainte...

A district court granted in part and denied in part the federal government's motion to dismiss a second amended complaint in an ongoing civil rights lawsuit brought by 21 young people. Plaintiffs argued the government promoted the exploitation of fossil fuels despite knowing its actions would signif...