Idaho Code § 42-3301
The governor of the state of Idaho is hereby authorized to appoint a commission consisting of three (3) commissioners, of which the director of the department of water resources may be one (1), and up to two (2) alternate commissioners, to represent the state of Idaho on a joint commission to be composed of commissioners representing the states of Wyoming, Utah, and Idaho, and a commissioner that may be appointed to represent the United States of America, to be constituted by said states for the purpose of negotiating and entering into a compact or compacts, agreement or agreements, between the said states, with consent of congress, respecting the lawful diversion, distribution, and the further utilization and disposition of the waters of Bear River, and all streams tributary thereto, with due regard to the priority rule controlling the use of water, and fixing and determining a method of regulation, administration and control of the waters of said river; provided, however, that any compact or agreement so entered into on behalf of said states shall not be binding or obligatory upon either of said states or citizens thereof until and unless the same shall have been ratified and approved by the legislatures of the said three (3) states and by the congress of the United States.
Idaho Code § 42-3301