The Tenth Circuit affirmed dismissal of a lawsuit concerning a long-running water dispute between an Indian tribe and a private landowner in Utah. The tribe sued the landowner in tribal court, arguing the landowner had been diverting the tribe's water for years. The tribal court held it had subject ...

In an en banc decision, the First Circuit affirmed in part and reversed in part summary judgment for an environmental group in a CWA citizen suit against developers of a construction site in Massachusetts. The group argued the developers violated the CWA by failing to comply with the construction ge...

The Tenth Circuit affirmed dismissal of ranching groups' challenge to FWS' designation of critical habitat for the endangered New Mexico meadow jumping mouse. The groups argued FWS' methodology for analyzing economic impacts of the designation violated the ESA and court precedent, that the Service f...

The Ninth Circuit vacated EPA's denial of a petition to cancel the registration of the pesticide tetrachlorvinphos (TCVP). An environmental group petitioned the Agency to cancel the registration of TCVP for use in household pet products, and EPA denied the petition. The group argued the Agency erred...

The Ninth Circuit affirmed summary judgment for FWS in a challenge to its 2016 Kenai Rule, which banned baiting of brown bears in the Kenai National Wildlife Refuge and hunting of coyotes, lynx, and wolves in a specific wildlife recreation area. The state of Alaska and a hunting group argued the rul...

The Ninth Circuit again affirmed a district court order that remanded to state court several California counties' and cities' lawsuit against oil and gas companies alleging state law claims arising from global warming. The district court concluded that none of the companies' grounds for removal—fe...

A district court denied nonprofit groups' motion for summary judgment in a challenge to FDA's denial of the group's petition concerning a threshold of regulation (TOR) exemption that allowed the inclusion of sodium perchlorate monohydrate in food-contact materials. The groups argued FDA violated the...

The Ninth Circuit affirmed a district court's denial of summary judgment for environmental groups in a challenge to the Forest Service's allowance of livestock grazing in the Stanislaus National Forest. The groups argued the grazing led to fecal matter runoff that polluted streams in the area, impai...

The Fourth Circuit affirmed a district court order that remanded to state court the city of Baltimore's climate change lawsuit against oil companies. The city alleged it sustained climate change-related injuries, including an increase in sea levels, storms, floods, heatwaves, droughts, and extreme p...

A district court denied a landowner's motion to temporarily enjoin a natural gas pipeline developer from blasting aquifers along a route approved by FERC that crossed his property. The landowner argued the court had jurisdiction because he was not seeking to modify or set aside FERC's certificate fo...