(a) The purpose of this part is to promote leasing on Indian land for housing, economic development, and other purposes.

(b) This part specifies:

(1) Conditions and authorities under which we will approve leases of Indian land and may issue permits on Government land;

(2) How to obtain leases;

(3) Terms and conditions required in leases;

(4) How we administer and enforce leases; and

(5) Special requirements for leases made under special acts of Congress that apply only to certain Indian reservations.

(c) If any section, paragraph, or provision of this part is stayed or held invalid, the remaining sections, paragraphs, or provisions of this part remain in full force and effect.