Nothing in this chapter shall be construed as contravening or superseding the provisions of any international treaty , convention, or agreement, if such treaty , convention, or agreement is in force with respect to the United States on October 28, 1978 , or of any statute which implements any such treaty, convention, or agreement. ( Pub. L. 95–541, § 13 , Oct. 28, 1978 , 92 Stat. 2056 .) CFR Title Parts 15 904 18 290 40 8 45 670 , 672 , 673 , 674