A district court dismissed two Pennsylvania state senators' challenge to the Delaware River Basin Commission's imposition of a moratorium on gas drilling and hydraulic fracturing in the Delaware Basin. The senators argued, among other things, that the moratorium exceeded the Commission's authority. ...

The Ninth Circuit reversed summary judgment for FWS in a challenge to the Service's 2017 decision reversing its 2011 decision that the Pacific walrus qualified for listing under the ESA. An environmental group had argued the Service violated the APA by failing to sufficiently explain its change in p...

The D.C. Circuit affirmed summary judgment for FWS in a lawsuit concerning its denial of a nonprofit group's permit applications to export four blue iguanas to a Danish zoo and to continue a captive-bred wildlife program at its Arizona facility. A district court saw no problem with FWS' denials and ...

A district court overrode the Biden Administration's objections to a lawsuit challenging President Trump's issuance of a presidential permit in 2019 for construction of a cross-border segment of the Keystone XL pipeline. Environmental groups argued the former president violated the Property Clause, ...

In an unpublished opinion, the D.C. Circuit affirmed dismissal of a challenge to FWS' failure to provide notice and comment on its guidelines for creating species status assessments. An environmental group had argued that FWS violated the ESA by failing to put the guidelines through notice and comme...