The Sixth Circuit dismissed as moot a lawsuit seeking to preliminarily enjoin EPA's 2015 Clean Water Rule that clarified the definition of "waters of the United States" under the CWA. Ohio and Tennessee challenged the validity of the rule, arguing it extended the scope of the CWA beyond the reach of...

The Fifth Circuit affirmed, 2-1, a lower court ruling in favor of fishermen's challenge to NMFS regulations regarding offshore aquaculture in federal waters of the Gulf of Mexico. The fishermen argued that the regulations were invalid because they fell outside the agency's authority to regulate fish...