The Federal Circuit upheld a ban on the importation from Mexico of shrimp and other seafood caught with gillnets or within the range of the critically endangered vaquita porpoise. A lower court issued a preliminary injunction requiring the Department of Commerce to ban importation of all shrimp, cur...

The Fourth Circuit vacated the U.S. Army Corps of Engineers' verification that construction of a natural gas pipeline could proceed in West Virginia under the terms and conditions of CWA Nationwide Permit (NWP) 12. Environmental groups argued that the Corps improperly incorporated the state's condit...

A district court vacated nationwide the Applicability Date Rule, which suspended the effect of the Clean Water Rule until February 2020 and required agencies in the interim to apply the pre-Clean Water Rule definition of "waters of the United States." Environmental groups argued that EPA and the U.S...