The Sixth Circuit granted the Commonwealth of Kentucky's and business groups' motions to preliminarily enjoin EPA's and the Army Corps of Engineers' 2023 rule revising the definition of "waters of the United States" under the CWA. A district court had denied the motions, concluding plaintiffs lacked...

The D.C. Circuit vacated EPA's withdrawal of its determination to regulate perchlorate in drinking water. An environmental group argued EPA lacked the authority to withdraw the determination under the SDWA, and that even if it did have such authority, it acted arbitrarily and capriciously in doing s...

A magistrate judge recommended that the Forest Service's motion to dismiss be denied in a challenge to a proposed logging project in the Fremont-Winema National Forest. An environmental group argued the Service violated the National Forest Management Act and the APA by failing to provide an adequate...

A magistrate judge recommended that BLM's motion to dismiss be denied in a challenge to its proposed logging project in northwest Oregon. Environmental groups argued BLM's landscape plan for the project violated NEPA by failing to establish baseline environmental conditions, failing to consider sign...

The Ninth Circuit affirmed summary judgment for the U.S. government in a challenge to President Obama's issuance of a proclamation expanding the Cascade-Siskiyou National Monument in southwestern Oregon. A timber company argued the proclamation was an invalid exercise of the Antiquities Act because ...

The D.C. Circuit dismissed for mootness a challenge to the Bureau of Ocean Energy Management's (BOEM's) 2021 oil and gas lease sale in the Gulf of Mexico. Environmental groups argued the sale violated NEPA. The district court had concluded BOEM failed to properly follow NEPA procedures, and vacated ...

The Fourth Circuit, 2-1, vacated a district court ruling in a lawsuit concerning the Army Corps of Engineers' plan for maintaining a dam on the Savannah River. The state of South Carolina argued the Corps' plan violated the Water Infrastructure Improvements for the Nation (WIIN) Act because it would...

A district court granted 24 states' motion to preliminarily enjoin EPA's and the Army Corps of Engineers' 2023 rule revising the definition of "waters of the United States" under the CWA. The states argued the rule violated the APA, the Commerce Clause, the Tenth Amendment, the Due Process Clause, a...

A district court granted Texas' and Idaho's motion to preliminarily enjoin EPA's and the Army Corps of Engineers' 2023 rule revising the definition of "waters of the United States" under the CWA. The states sought to enjoin the rule within their borders, arguing it was unconstitutional and violated ...

A district court denied environmental groups' motion for summary judgment in a challenge to BLM's 2020 rule that eliminated the 15-day protest process for timber sales and clarified that an authorizing officer can implement forest management decisions immediately. The groups argued BLM violated the ...