Section 1.
The membership in the Turtle Mountain Band of Chippewa Indians shall consist of:
(a) All persons whose names appear on the roll prepared pursuant to Section 2 of the Act of May 24, 1940 (54 Stat. 219), and approved by the Secretary of the Interior on March 15, 1943.
(b) All descendants of persons whose names appear on the roll defined in Section 1 (a) of this Article, provided that such descendants possess one-fourth or more Indian blood, and provided further that such descendants are not domiciled in Canada.