The act authorizes compact parties to enter supplemental agreements to provide additional benefits or services or for interstate delivery. These agreements cannot be inconsistent with the compact's provisions nor can they relieve a party state of the obligation to provide adoption or medical assistance. Compact administrators in states that are parties to such supplemental agreements can devise procedures and forms for them. Compact administrators are responsible for determining if additional legislation is needed in their states to carry out the compact or any supplemental agreement. Joinder and Withdrawal .
Any state can join the compact by action of the state authority empowered to execute it.
The executing authority must have the compact's full text and notice of its execution published and provide copies of it on request so that the general public can know about it. A state can withdraw by sending written notice from the executing authority to appropriate officials in all other party states. The withdrawal cannot take place until one year from the date of the notice. If a state withdraws, all adoption agreements in effect at the time of the withdrawal must remain in effect until they terminate under their terms. Beneficiaries of such agreements continue to have all the rights and obligations under the compact, and the withdrawing state must continue to administer the compact to the extent necessary to preserve these rights and protections.