§ 7421.
([Aug. 16, 1954, ch. 736], [68A Stat. 876]; [Pub. L. 89–719, title I, § 110(c)], Nov. 2, 1966, [80 Stat. 1144]; [Pub. L. 94–455, title XII, § 1204(c)(11)], Oct. 4, 1976, [90 Stat. 1699]; [Pub. L. 95–628, § 9(b)(1)], Nov. 10, 1978, [92 Stat. 3633]; [Pub. L. 97–258, § 3(f)(13)], Sept. 13, 1982, [96 Stat. 1065]; [Pub. L. 105–34, title XII], §§ 1222(b)(1), 1239(e)(3), title XIV, § 1454(b)(2), Aug. 5, 1997, [111 Stat. 1019], 1028, 1057; [Pub. L. 105–206, title III, § 3201(e)(3)], July 22, 1998, [112 Stat. 740]; [Pub. L. 105–277, div. J, title IV, § 4002(c)(1)], (f), Oct. 21, 1998, [112 Stat. 2681–906], 2681–907; [Pub. L. 106–554, § 1(a)(7) [title III, §§ 313(b)(2)(B), 319(24)]], Dec. 21, 2000, [114 Stat. 2763], 2763A–642, 2763A–647; [Pub. L. 114–74, title XI, § 1101(f)(10)], Nov. 2, 2015, [129 Stat. 638]; [Pub. L. 115–141, div. U, title IV, § 401(a)(324)], Mar. 23, 2018, [132 Stat. 1199].)