25 CFR § 151.11 - Off-reservation acquisitions.
The Secretary shall consider the following requirements in evaluating tribal requests for the acquisition of lands in trust status, when the land is located outside of and noncontiguous to the tribe's reservation, and the acquisition is not mandated:
(a) The criteria listed in § 151.10 (a) through (c) and (e) through (h);
(b) The location of the land relative to state boundaries, and its distance from the boundaries of the tribe's reservation, shall be considered as follows: as the distance between the tribe's reservation and the land to be acquired increases, the Secretary shall give greater scrutiny to the tribe's justification of anticipated benefits from the acquisition. The Secretary shall give greater weight to the concerns raised pursuant to paragraph (d) of this section.
(c) Where land is being acquired for business purposes, the tribe shall provide a plan which specifies the anticipated economic benefits associated with the proposed use.
(d) Contact with state and local governments pursuant to § 151.10 (e) and (f) shall be completed as follows: Upon receipt of a tribe's written request to have lands taken in trust, the Secretary shall notify the state and local governments having regulatory jurisdiction over the land to be acquired. The notice shall inform the state and local government that each will be given 30 days in which to provide written comment as to the acquisition's potential impacts on regulatory jurisdiction, real property taxes and special assessments.