In an unpublished order, the Fifth Circuit, 2-1, stayed EPA's disapproval of SIPs submitted by Texas and Louisiana following the Agency's 2015 revision to the ozone NAAQS. The states moved for a stay pending review of EPA's disapproval. The court found a stay was appropriate because the states made ...

The Fifth Circuit dismissed Louisiana's challenge to the Biden Administration's interim estimates on the social cost of greenhouse gas emissions. Louisiana initially sought to preliminarily enjoin the interim estimates from being used, arguing they were procedurally invalid, arbitrary and capricious...

A district court granted in part and denied in part summary judgment for environmental groups in a lawsuit concerning FWS' management of grizzly bear recovery in the Bitterroot Ecosystem. The groups argued FWS violated NEPA and the APA by choosing not to implement grizzly bear recovery plans adopted...

A district court granted in part an environmental group's motion for summary judgment in a challenge to NMFS' 2021 permit authorizing the incidental taking of ESA-listed humpback whales in a sablefish fishery off the Pacific coast. The group argued NMFS violated the Marine Mammal Protection Act (MMP...

A district court denied conservation groups' motion to intervene in a lawsuit concerning EPA's and the Army Corps of Engineers' rule defining the scope of the CWA. The groups sought intervention as of right, arguing they had "a significant, protectable interest" because they represent those who use ...

A district court granted in part and denied in part FWS' motion to dismiss a challenge to the Service's failure to comply with deadlines for listing species as threatened or endangered and for designating critical habitats for them. An environmental group sought to compel FWS to make 12-month findin...

A district court denied the Army Corps of Engineers' motion to dismiss an ESA citizen suit alleging the Corps' operation of a dam in California was unlawfully taking protected salmon species. An individual argued the Corps violated the ESA by jeopardizing salmon populations with the dam's flood cont...

The D.C Circuit denied an industry group's challenge to EPA's 2021 rule requiring power plants in several upwind states to reduce nitrogen oxide emissions. The group argued the rule was arbitrary and capricious, and that EPA failed to conduct a legally and technically appropriate assessment as requi...

A district court denied a mining company's motion to dismiss an Indian tribe's challenge to a land exchange between the company and the Forest Service. The tribe argued that the land exchange implicated its sovereign interests, including a right under an 1854 treaty to use the land for hunting, fish...

The Fifth Circuit reversed summary judgment for NOAA and NMFS in a challenge to the agencies' rule requiring charter boat owners to install NMFS-approved vessel monitoring systems (VMSs) to track the vessels' GPS locations. Charter boat captains argued the rule's tracking requirement exceeded the au...