This section and the preceding sections hereof constitute an agreement between the States of New Jersey and New York supplementary to the compact between the two States dated April thirtieth, one thousand nine hundred and twenty-one, and amendatory thereof and shall be liberally construed to effectuate the purposes of said compact and of the comprehensive plan heretofore adopted by the two States pursuant thereto, and the powers vested in the Port Authority hereby shall be construed to be in aid of and supplemental to and not in limitation or derogation of any of the powers heretofore conferred upon or delegated to the Port Authority.

L.1947, c. 44, p. 143, s. 5.