16 U.S.C. § 272b — Livestock grazing

(a) In general — If federal land now included in the park was legally being used for grazing on November 12, 1971, under a lease, permit, or license for a fixed number of years issued by some federal department, establishment, or agency, the Secretary of the Interior must let the holder — or the holder's heirs — keep grazing for the rest of that term, plus one renewal after it ends. (b) Lost Spring Canyon Addition — Special rules apply to grazing rights on land in the Lost Spring Canyon Addition: (1) Continuation of grazing leases, permits, and licenses — For any grazing lease, permit, or license issued before October 30, 1998, the Secretary must continue it, subject to periodic renewal, for a period equal to the original holder's lifetime, plus the lifetimes of any direct descendants of the holder who were born before October 30, 1998. (2) Retirement — Once that whole period ends, the grazing lease, permit, or license is permanently retired. (3) Periodic renewal — Until that period ends, the holder, or a qualifying descendant, is entitled to keep renewing the lease, permit, or license periodically, subject to whatever limits, conditions, or regulations the Secretary sets. (4) Sale — The holder may sell the grazing lease, permit, or license during that period, but only if the buyer agrees to permanently retire it immediately upon buying it. (5) Taylor Grazing Act — Nothing in this subsection affects other rules about leases, permits, or licenses under the 1934 Taylor Grazing Act. (6) Administration — The National Park Service, rather than the Bureau of Land Management, administers any grazing lease, permit, or license covering land in the Lost Spring Canyon Addition.