; and (bb) modify the permit or lease to reflect the revised level of use. (II) Authorized level To ensure that there is a permanent reduction in the authorized level of grazing on the land covered by a permit or lease donated under subclause (I), the Secretary concerned shall not allow grazing use to exceed the authorized level established under that subclause. (iii) Common allotments (I) In general If a grazing allotment covered by a grazing permit or lease or portion of a grazing permit or lease that is donated under clause (i) or (ii) also is covered by another grazing permit or lease that is not donated, the Secretary concerned shall reduce the grazing level on the grazing allotment to reflect the donation. (II) Authorized level To ensure that there is a permanent reduction in the level of livestock grazing on the land covered by a grazing permit or lease or portion of a grazing permit or lease donated under clause (i) or (ii), the Secretary concerned shall not allow grazing to exceed the level established under subclause (I). (7) Vegetation management (A) In general Subject to subparagraph (B), vegetation management within a Tribal cultural area may be permitted— (i) if necessary to protect, maintain, or enhance a Tribal cultural area (including the enhancement of traditional food or material gathering); and (ii) for restoration purposes. (B) Requirement Vegetation management permitted under subparagraph (A) shall be— (i) subject to— (I) such reasonable regulations, policies, and practices as the Secretary concerned determines necessary; and (II) applicable law (including regulations)