(a) This part is promulgated pursuant to sections 3.1 , 3.5(1) , and 15.2 of the Compact and shall be construed and applied subject to all of the terms and conditions of the Compact and of the provisions of Pub. L. 91-575 , 84 Stat. 1509: Provided, Any provision in this statement of general policies that is inconsistent with the Compact itself shall be null and void.