(D) A tribal organization, as defined in section 4(l) of the Indian Self-Determination and Education Assistance Act (Public Law 93638;
25 U.S.C.
450b (l)), or an economic enterprise, as defined in section 3(e) of the Indian Financing Act of 1974 (Public Law 93262;
25 U.S.C.
1452 (e)), whether or not such economic enterprise is organized for profit purposes or
nonprofit">
nonprofit purposes.