Any tribe meeting the criteria in paragraphs (a) or (b) of this section must follow the requirements of this subpart.
A tribe whose governing document or charter of incorporation provides for petitioning the Secretary to call a Secretarial election for any of the following purposes:
Amending or revoking the governing document;
Amending a charter of incorporation ratified under 25 U.S.C. 477 of the IRA before May 24, 1990 where the amendments section or article specifically requires it;
Amending or ratifying a charter of incorporation under 25 U.S.C. 503 of the OIWA; or
Taking any other action authorized by the governing document or charter of incorporation.
A federally recognized tribe, without an existing governing document, adopting a governing document under Federal statute, for the first time.