The Second Circuit vacated a final rule published by the National Highway Traffic Safety Administration (NHTSA) that reversed the agency's 2016 civil penalty increase for noncompliance with Corporate Average Fuel Economy (CAFE) standards. States and environmental groups argued NHTSA erroneously conc...

The Tenth Circuit affirmed dismissal of a challenge brought by an environmental group concerning conservation of the lesser prairie chicken. The group had argued that FWS unreasonably delayed submitting to Congress a 2003 policy concerning conservation efforts when making listing decisions under the...

The Seventh Circuit reversed the denial of transmission companies' motion to intervene in a lawsuit challenging the Wisconsin Public Service Commission's approval of a $500 million electricity transmission line in southwestern Wisconsin. Environmental groups challenged the approval on constitutional...