(1) This compact may be amended from time to time. Amendments shall be presented in resolution form to the chairman of the Board of Compact Administrators and shall be initiated by one or more participating states.
(2) Adoption of an amendment shall require endorsement by all participating states and shall become effective 30 days after the date of the last endorsement.
(3) Failure of a participating state to respond to the compact chairman within 120 days after receipt of a proposed amendment shall constitute endorsement thereof.