Ranching Groups Intervened in Bison Grazing Lawsuit
Montana organizations joined a legal challenge regarding bison grazing permits on federal land.
Updated on Sept. 20, 2026 in National Parks
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The Montana Stockgrowers Association and South Phillips Grazing Districts have filed a motion to intervene in a federal lawsuit involving American Prairie. The case concerns the U.S. Department of the Interior's decision to revoke grazing permits for bison on federal allotments.
Why it matters
The lawsuit centers on whether bison are managed for conservation or livestock, a distinction that dictates land use regulations under the Taylor Grazing Act. The intervention seeks to uphold the agency's decision to restrict these specific grazing privileges in Phillips County.
Approximately 900 bison are currently scheduled for removal from federal allotments. This follows an agency determination that the animals did not meet the requirements of the Taylor Grazing Act for livestock production.
The players
Montana Stockgrowers Association
This is a trade organization representing the interests of cattle ranchers across the state of Montana.
South Phillips Grazing Districts
These are local administrative bodies that manage shared grazing access on federal lands in Phillips County.
American Prairie
This is a nonprofit organization focused on creating a large-scale nature preserve in the Great Plains.
U.S. Department of the Interior
This federal executive department manages most public lands and natural resources in the United States.
The details
The dispute originated when the U.S. Department of the Interior determined that American Prairie was managing its bison for conservation rather than livestock production. While a federal judge issued a temporary restraining order on September 4, 2026, allowing bison to stay on three allotments, the court declined to extend that protection to three other designated areas.
Timeline
May 2026: The Department of the Interior determined the bison were managed for conservation.
August 2026: American Prairie filed its lawsuit against the Department of the Interior.
September 4, 2026: A federal judge issued a temporary restraining order regarding specific allotments.
September 30, 2026: The deadline for the removal of bison from the contested federal allotments.
Roadmap
The Taylor Grazing Act remains the primary law governing land-use permits for livestock production on federal ranges. This case marks a significant test of how the act applies to non-traditional grazing species like bison compared to traditional cattle.
The court's ongoing rulings directly determine the accessibility of federal grazing lands for both conservation and commercial agricultural efforts. Ranchers and conservationists in Montana face potential shifts in land usage rights based on the final federal judge's interpretation.
The takeaway
This case highlights the growing friction between conservation organizations and traditional agricultural groups over the use of federal rangelands. Stakeholders should monitor the court's upcoming decisions, as they could establish a new precedent for grazing permit eligibility in the West.
What happens next
The court will soon issue a decision on whether the Montana Stockgrowers Association and South Phillips Grazing Districts will be permitted to formally join the litigation.
Further reading
For more context on land management, visit the National Parks section.
Source note: This article includes information reported by KRTV NEWS Great Falls.
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