31 Pa. Stat. § 700.5
When, and if, an agreement and compact shall be agreed upon by and between the legally constituted authorities of the states of Pennsylvania, New York, New Jersey and Vermont and Massachusetts, if it chooses to join such compact, if shall be the duty of the Pennsylvania Milk Compact Commissioner, hereinbefore designated to transmit such agreement or compact to the Governor of this Commonwealth, and if the Governor shall determine that the same conforms to the intent, purpose and requirements of this act, he shall so certify and transmit, or may join with legally constituted authorities of the other states that are parties to such compact in transmitting the same to the Congress of the United States, requesting the consent of the Congress thereto, in conformity with the provisions of Article 1,Section 10, Clause 3 of the Constitution of the United States.
31 P.S. § 700.5