of 1938 ( 29 U.S.C. 213(a) ) is amended by striking paragraph (18) and redesignating paragraph (19) as paragraph (18). 8. Severability If any provision of this Act, or an amendment made by this Act, or the application of such provision or amendment to any person or circumstance, is held to be invalid, the remainder of this Act, or an amendment made by this Act, or the application of such provision to other persons or circumstances, shall not be affected.