P.R. Laws tit. 4, § 1443
Any state, as defined in § 1434 of this title, is eligible to become a compacting state. The Compact shall become effective and binding upon the legislative approval of the same by at least thirty-five (35) states. The initial effective date shall be July 1, 2001, or upon enactment into law by the thirty-fifth (35th) state. Thereafter, the Compact becomes effective and binding, in relation to any other compacting state, upon enactment of the Compact into law by that state. The governors of Non-Compacting States or their designees shall be invited to participate in Interstate Commission activities on a nonvoting basis before adoption of the Compact by all states and territories of the United States.
Amendments to the Compact may be proposed by the Interstate Commission for enactment by the Compacting States. No amendment becomes effective and binding upon the Interstate Commission and the Compacting States unless and until it is enacted into law by unanimous consent of the Compacting States.
History —Aug. 11, 2004, No. 208, § 1, art. 11.