Cal. Veh. Code § 15028
The compact shall be liberally construed so as to effectuate the purposes thereof. The provisions of the compact shall be severable and if any phrase, clause, sentence, or provisions of the compact is declared to be contrary to the constitution of any party state or of the United States or the applicability thereof to any government, agency, person or circumstance is held invalid, the validity of the remainder of the compact and the applicability thereof to any government, agency, person or circumstance shall not be affected thereby. If the compact shall be held contrary to the constitution of any state party thereto, 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.
Ca. Veh. Code § 15028