Case: Center for Biological Diversity, Gallatin Wildlife Association, Great Old Broads for Wilderness, Rocky Mountain Wild, Sierra Club, Western Watersheds Project, and WildEarth Guardians vs. Bureau of Land Management

March 2, 2026 — Advocates for the West and our conservation partners sued the Bureau of Land Management to challenge its final plans governing greater sage-grouse management across 71 million acres of federal public lands in nine Western states. The lawsuit covers the dwindling species’ habitat in Montana, Idaho, Colorado, North Dakota, South Dakota, Nevada, […]

Case: Oregon Natural Desert Association, Friends of the Nevada Wilderness, and Idaho Conservation League v. U.S. Department of the Air Force

February 4, 2026 — Advocates for the West filed our motion for summary judgment, challenging the U.S. Air Force’s July 2023 Record of Decision (ROD) and March 2023 Environmental Impact Statement (EIS) to expand and intensify its military trainings using F-15 fighter jets over 7.5 million acres in the Owyhee Canyonlands. Our brief argues that […]

Case: Public Employees for Environmental Responsibility and Western Watersheds Project v. Debra Haaland, Tracy Stone-Manning, and U.S. Bureau of Land Management

September 13, 2023 — Advocates for the West filed suit in the U.S. District Court for the District of Columbia against the Bureau of Land Management (BLM) for its failure to abide by the Federal Land Policy and Management Act to determine the prioritization and timing of environmental analyses for livestock grazing allotments on public […]

Case: Defenders of Wildlife and Southern Utah Wilderness Alliance v. U.S. Department of the Interior and Bureau of Land Management

April 12, 2023 — Advocates for the West reached a court-approved settlement agreement, requiring the Bureau of Land Management to abandon the Pinyon-Juniper Categorical Exclusion Rule and issue a new decision by September 30, 2024. June 30, 2022 — Advocates for the West filed a lawsuit challenging the Bureau of Land Management over a Trump-era […]

Case: Xerces Society for Invertebrate Conservation and Center for Biological Diversity v. Kevin Shea and Animal and Plant Health Inspection Service

August 22, 2025 — U.S. District Judge Marco A. Hernandez issued a final judgment holding that APHIS must prepare new environmental analysis that provides the public with more details on its future spraying plans and that APHIS must evaluate non-toxic spraying alternatives to control native grasshopper populations. June 23, 2025 — U.S. District Judge Marco […]

Case: Western Watersheds Project and Center for Biological Diversity v. Ryan K. Zinke, David Bernhardt; and BLM

January 17, 2025 — Advocates for the West won a victory upholding our Phase One win in this case. The U.S. Court of Appeals for the Ninth Circuit held that the first Trump administration illegally approved hundreds of oil and gas leases on public lands and prohibited any further development of those leases. The leases […]

Case: Center for Biological Diversity, Western Watersheds Project, and WildEarth Guardians v. U.S. Bureau of Land Management, Mary D'Aversa, and U.S. Department of the Interior

September 12, 2024 — Advocates for the West and our partners finalized an agreement with mining company P4 that will result in millions of dollars in payments and other significant measures to benefit conservation of sage grouse and other wildlife. Under the agreement, P4—a subsidiary of Bayer AG, formerly Monsanto—agrees to contribute more than $5 million […]

Case: Western Watersheds Project, WildEarth Guardians, and Center for Biological Diversity v. U.S. Sheep Experiment Station, and USDA Agricultural Research Service

April 16, 2021 — A federal judge ruled in favor of Advocates for the West and against the reauthorization and expansion of domestic sheep grazing in and around the US Sheep Experiment Station in Idaho’s Centennial Mountains on the Idaho-Montana border. With this decision, the Sheep Station is not permitted to graze sheep on the summer […]

Case: Upper Green River Alliance, Western Watersheds Project, and Center for Biological Diversity v. U.S. Bureau of Land Management and William Perry Pendley

March 14, 2023 — Advocates for the West filed our reply brief on appeal. October 28, 2022 — Advocates for the West filed our opening brief on appeal, requesting that the Court reverse the judgment of the district court and remand with instructions to vacate the NPL project’s record of decision and environmental impact statement. May 10, […]

Case: Western Watersheds Project v. Interior Board of Land Appeals & U.S. Department of the Interior

February 17, 2021 – Advocates for the West filed our opening brief with the 10th Circuit Court requesting a reversal of the district court’s erroneous dismissal for lack of Article III standing. Our brief argues that the Court should hold a 2017 decision of the Interior Board of Land Appeals as unlawful and force the defendants […]