25 CFR § 151.13 - Title review.
(a) If the Secretary determines that she will approve a request for the acquisition of land from unrestricted fee status to trust status, she shall require the applicant to furnish title evidence as follows:
(1) The deed or other conveyance instrument providing evidence of the applicant's title or, if the applicant does not yet have title, the deed providing evidence of the transferor's title and a written agreement or affidavit from the transferor, that title will be transferred to the United States on behalf of the applicant to complete the acquisition in trust; and
(i) A current title insurance commitment; or
(ii) The policy of title insurance issued to the applicant or current owner and an abstract of title dating from the time the policy of title insurance was issued to the applicant or current owner to the present.
(3) The applicant may choose to provide title evidence meeting the title standards issued by the U.S. Department of Justice, in lieu of the evidence required by paragraph (a)(2) of this section.
(b) After reviewing submitted title evidence, the Secretary shall notify the applicant of any liens, encumbrances, or infirmities that the Secretary identified and may seek additional information from the applicant needed to address such issues. The Secretary may require the elimination of any such liens, encumbrances, or infirmities prior to taking final approval action on the acquisition, and she shall require elimination prior to such approval if she determines that the liens, encumbrances or infirmities make title to the land unmarketable.