Mass. Gen. Laws ch. 175K, § 15
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(c) Upon the request of a party to a conflict over the meaning or interpretation of commission actions, and upon a majority vote of the compacting states, the commission may issue advisory opinions regarding the meaning or interpretation in dispute.
In the event any provision of this compact exceeds the constitutional limits imposed on the legislature of any compacting state, the obligations, duties, powers or jurisdiction sought to be conferred by that provision upon the commission shall be ineffective as to that compacting state, and those obligations, duties, powers or jurisdiction shall remain in the compacting state and shall be exercised by the agency thereof to which those obligations, duties, powers or jurisdiction are delegated by law in effect at the time this compact becomes effective.