(1) Within 60 days after approval by the attorney general and signature of the parties, an agreement made pursuant to this chapter must be filed with:
(a) the regional office of the bureau of Indian affairs of the United States department of the interior having trust responsibility for the tribe that is party to the agreement or its successor agency;
(b) each county clerk and recorder of each county where the principal office of one of the parties to the agreement is located, except as provided in (2) of this section;
(c) the secretary of state; and
(d) the affected tribal government.
(2) If a party to the agreement is a state agency, the agreement need not be filed with the county clerk and recorder for Lewis and Clark County.