The compact shall be liberally construed so as to effectuate its purposes. The provisions of the compact are severable and if any phrase, clause, sentence, or provision of the compact is declared to be contrary to the constitution of any party state or of the United States or the applicability of it to a government, agency, person or circumstance is held invalid, the validity of the remainder of the compact and the applicability of it to any government, agency, person or circumstance shall not be affected by it. If the compact is held contrary to the constitution of any party state, the compact shall remain in full force and effect as to the remaining states and in full force and effect as to the state affected as to all severable matters.