The Secretary of the Interior shall prepare a roll of all persons born on or prior to and living on July 29, 1971, who are lineal descendants of members of the Pembina Band as it was constituted in 1863, except that persons in the following categories shall not be so enrolled:
a. those who are not citizens of the United States;
b. those who are members of the Red Lake Band of Chippewa Indians; and
c. those who participated in the Mississippi, Pillager, and Lake Winnibigoshish Chippewa Band awards under the provisions of sections
594 and
594a of this title.