A district court granted the Army Corps of Engineers' motion to dismiss a developer's challenge to the Corps' 2012 jurisdictional determination over certain wetlands in Virginia. The developer challenged the Corps' significant nexus finding between the wetlands and the Northwest River, arguing the s...

A district court granted the Biden Administration's motion to dismiss a challenge to the president's 2023 designation of Baaj Nwaavjo I’tah Kukveni—Ancestral Footprints of the Grand Canyon National Monument. The Arizona state legislature, a cattle rancher, and other plaintiffs argued Proclamatio...

In a divided opinion, a D.C. Circuit panel vacated FAA's and the National Park Service's plan governing tourist flights over four national parks in California, and also ruled that CEQ lacked the authority to issue regulations binding on other federal agencies. An environmental group sought to set as...

A district court granted an Indian tribe's motion for a temporary restraining order (TRO) against BLM's decision to approve the third phase of a lithium drilling project in northwestern Arizona. The tribe argued BLM violated the National Historic Preservation Act (NHPA) when it found no historical p...

A district court denied an environmental and public health group's motion for a preliminary injunction in a challenge to FWS' and the Federal Highway Administration's (FHwA's) authorization of a trail development project through a former nuclear weapons production site in Rocky Flats National Wildli...

A district court denied summary judgment for environmental groups in a challenge to BLM's management plan for a recreation area in Montana. The groups argued BLM violated NEPA, FLPMA, and the Federal Advisory Committee Act (FACA) when it developed the plan, and sought a preliminary injunction. The c...

A district court granted in part and denied in part summary judgment for a conservation group in a challenge to the National Park Service's (NPS') delayed implementation of a marine reserve zone and commercial fishing phaseout in Biscayne National Park in Florida. The group argued NPS violated the A...

A district court denied outdoor recreation groups' request to halt implementation of BLM's 2023 travel management plan (TMP) closing over 300 miles of routes previously available for off-highway vehicle use on public lands within the Labyrinth/Gemini Bridges Travel Management Area in Utah. The group...

A district court denied summary judgment for conservation groups in a challenge to BLM's authorization of six lease sales for oil and gas development in the western United States. The groups argued BLM failed to take the requisite "hard look" when analyzing the cumulative impact of greenhouse gas em...

In an en banc decision, the Ninth Circuit, 6-5, affirmed a district court order denying a tribal group's motion for preliminary injunction against the U.S. government's transfer of federal land within Tonto National Forest to a mining company. The land is a site of spiritual value to the Western Apa...