The tenure of office of said commissioners shall be at the pleasure of the governor, and their remuneration and expenses shall be fixed by him; provided, however, that if the state of Wyoming shall appoint but one (1) commissioner to perform such services for said state, then and in that event, the governor of the state of Idaho may, in his discretion, reduce the number of commissioners of the state of Idaho from ten (10) to one (1), who shall exercise all the rights and duties imposed in this act.
Idaho Code § 42-3318