; and (xi) 40 acres in the SW 1/4 of the SE 1/4 . (3) Federal land (A) In general Notwithstanding any other provision of law, subject to subparagraph (B), for purposes of a land exchange under this subsection, the Secretary may exchange any Federal land within 100 miles of the Reservation. (B) Completion A land exchange under subparagraph (A) shall be completed by not later than 15 years after the date of enactment of this Act. (4) Requirements (A) Value The Secretary shall negotiate with the State using the roughly equivalent theory of valuation of any Federal land exchanged for State land. (B) Basis Unless the Secretary and the State specifically agree otherwise, each land exchange under this subsection shall be on a whole-estate for whole-estate basis. (5) Existing rights and uses (A) Uses (i) In general Subject to clause (ii), any use (including grazing) authorized under a valid lease, permit, or right-of-way on land exchanged under this subsection, as in effect on the date of the transfer, shall remain in effect until the date on which the lease, permit, or right-of-way expires. (ii) Exception Clause (i) shall not apply if the holder of the lease, permit, or right-of-way requests an earlier termination of the lease, permit, or right-of-way in accordance with applicable law. (B) Improvements Any improvements constituting personal property (as defined by State law) on land exchanged under this subsection by the holder of the lease, permit, or right-of-way shall remain the property of the holder and shall be removed not later than 90 days after the date on which the lease, permit, or right-of-way expires, unless the Fort Belknap Indian Community and the holder agree otherwise. (C) Eligibility Notwithstanding paragraph (3)(B), if, at any time after the date of enactment of this Act, the Fort Belknap Indian Community Council enters into a lease for any other State parcel or secures the written consent of each lessee of any other State parcel to the exchange of that parcel, the other State parcel shall be eligible