§ 1174. Relationship to state law. No provision of the agreement authorized by this article in whole or part invalidates or amends any provision of the law of New York state. Adoption of the agreement by New York state does not amend or modify any law of New York state. Implementation of any condition of the agreement in New York state, whether adopted before, at, or after membership of New York state in the agreement, shall be exclusively done by a separate act or acts of the legislature.