(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.