Section, as added by Pub. L. 115–282, is based on acts June 15, 1917, ch. 30, title II, § 4, 40 Stat. 220; Aug. 9, 1950, ch. 656, § 2, 64 Stat. 428; Pub. L. 115–282, title IV, § 407(d)(1), (2), Dec. 4, 2018, 132 Stat. 4267, which was formerly classified to section 194 of Title 50, War and National Defense, before being transferred to this chapter and renumbered as this section.