50 U.S.C. § 2660
Section, Pub. L. 107-314, div. D, title XLV, §4509, as added Pub. L. 112-239, div. C, title XXXI, §3115(a), Jan. 2, 2013, 126 Stat. 2172; amended Pub. L. 113-291, §3111, 128 Stat. 3884, related to design and use of prototypes of nuclear weapons for intelligence purposes.