A district court vacated a series of regulations enacted in 2019 that modified how FWS and NMFS implement the ESA. Environmental groups, states, and cities argued the regulations violated the ESA, the APA, and NEPA. FWS and NMFS moved to remand without vacatur, arguing vacatur would cause confusion ...

The Ninth Circuit affirmed a district court order remanding to state court two climate liability suits against numerous oil and gas companies. The city and county of Honolulu and the county of Maui sued in state court, arguing the companies knew about climate change, understood the harms that energy...

The Ninth Circuit reversed a previous ruling that vacated summary judgment for a California city in a RCRA citizen suit brought by an environmental group. The group had argued the city's water wells were contaminated by hexavalent chromium that was in turn transported to city residents through its w...

The Ninth Circuit affirmed, 2-1, a district court's denial of a Native American group's motion to preliminarily enjoin a land exchange and prevent copper mining on land in Arizona. The group argued the land exchange violated the Religious Freedom Restoration Act (RFRA), the Free Exercise Clause, and...

The D.C. Circuit denied environmental groups' petition to review FERC's order approving an extension of a natural gas pipeline into North Carolina. The groups specifically challenged the order's approved return on equity rate and the adequacy of the Commission's EIS, arguing that FERC should not hav...

The U.S. Supreme Court held, 6-3, that President Barack Obama's EPA had exceeded its statutory authority under §111(d) of the CAA when it promulgated the Clean Power Plan to address carbon dioxide pollution from existing power plants. States and coal companies had petitioned for review of the plan,...