(a) Plan for economic development The Secretary shall
(1) enter into negotiations with the governing body of the Tribe with respect to establishing a plan for economic development for the Tribe;
(2) in accordance with this section and not later than two years after the adoption of a tribal constitution as provided in section
1300m–6 of this title, develop such a plan; and
(3) upon the approval of such plan by the governing body of the Tribe, submit such plan to the Congress.