Article XIII - Amendments
This constitution and bylaws may be amended by a majority vote of the qualified voters of the tribe voting at an election called for that purpose by the Secretary of the Interior, provided that at least forty percent (40%) of those entitled to vote shall vote in such election; but no amendment shall become effective until it shall have been approved by the Secretary of the Interior. It shall be the duty of the Secretary of the Interior to call an election on any proposed amendment when requested by a sufficient number of qualified voters as provided in Article XI or by the tribal council.