25 CFR § 5.3
Application procedure for preference eligibility
February 24, 2021
(a) Proof of eligibility must be submitted with the person's application for a position.
(b) In order for a person to be considered a preference eligible according to the standards of §5.1, they must submit proof of membership, descendancy or degree of Indian ancestry as indicated on rolls or records acceptable to the Secretary.
[43 FR 2393, Jan. 17, 1978. Redesignated at 47 FR 13327, Mar. 30, 1982]