A prior section 221 of Pub. L. 88–643, title II, Oct. 13, 1964, 78 Stat. 1045; Pub. L. 91–185, § 2, Dec. 30, 1969, 83 Stat. 847; Pub. L. 91–626, §§ 2, 3, Dec. 31, 1970, 84 Stat. 1872; Pub. L. 94–522, title II, §§ 202–204, Oct. 17, 1976, 90 Stat. 2468, 2469; Ex. Ord. No. 12326, §§ 1, 3, 6, Sept. 30, 1981, 46 F.R. 48889, 48890; Pub. L. 97–269, title VI, §§ 603–605, 610, Sept. 27, 1982, 96 Stat. 1146, 1147, 1153; Ex. Ord. No. 12443, §§ 4, 7, 8, Sept. 27, 1983, 48 F.R. 44752; Pub. L. 99–335, title V, §§ 501(2), (3), 503, June 6, 1986, 100 Stat. 622, 623; Pub. L. 100–178, title IV, § 402(b)(1), Dec. 2, 1987, 101 Stat. 1014; Pub. L. 100–453, title III, § 302(d)(1), (2), Sept. 29, 1988, 102 Stat. 1907; Pub. L. 102–88, title III, §§ 304(a), 305(a)(1), 306, Aug. 14, 1991, 105 Stat. 431, 432; Pub. L. 102–183, title III, §§ 302(a), 303(a), Dec. 4, 1991, 105 Stat. 1262, 1263, related to computation of annuities for other than former spouses and was set out as a note under section 403 of this title prior to the general amendment of Pub. L. 88–643 by section 802 of Pub. L. 102–496.

2019—Subsec. (a)(3)(B). Pub. L. 116–92, § 6202(a)(1)(A), substituted “, as determined by using the annual rate of basic pay that would be payable for full-time service in that position.” for period at end.

Subsec. (b)(1)(C)(i). Pub. L. 116–92, § 6202(a)(1)(B), substituted “2-year” for “12-month”.

Subsec. (f)(2). Pub. L. 116–92, § 6202(a)(1)(C), substituted “two years” for “one year”.

Subsec. (g)(2)(A), (B)(ii). Pub. L. 116–92, § 6202(a)(1)(D), substituted “two years” for “one year”.

Subsecs. (h) to (m). Pub. L. 116–92, § 6202(a)(1)(E), (F), added subsec. (h) and redesignated former subsecs. (h) to (l) as (i) to (m), respectively.

1993—Subsec. (a)(4). Pub. L. 103–178, § 202(a)(4)(A), struck out “(or, in the case of an annuity computed under section 2052 of this title and based on less than 3 years, over the total service)” after “years of the participant’s service”.

Subsec. (f)(1)(A). Pub. L. 103–178, § 202(a)(4)(B), inserted “after the participant’s death” after “under the system” and struck out “after the participant’s death” after “participant’s reduced annuity”.

Subsec. (g)(1). Pub. L. 103–178, § 202(a)(4)(C), substituted “(or is remarried, if” for “(or is remarried if”.

Subsec. (j). Pub. L. 103–178, § 202(a)(4)(D), struck out “(except as provided in paragraph (2))” after “individual shall be reduced”.

Pub. L. 116–92, div. E, title LXII, § 6202(e), Dec. 20, 2019, 133 Stat. 2186, provided that: “The amendments made by subsection (a)(1)(A) [amending this section] and subsection (c) [amending section 2082 of this title] shall take effect as if enacted on October 28, 2009, and shall apply to computations or participants, respectively, as of such date.”

Amendment by Pub. L. 103–178 effective Feb. 1, 1993, see section 202(b) of Pub. L. 103–178, set out as a note under section 2001 of this title.

Section effective on first day of fourth month beginning after Oct. 24, 1992, see section 805 of Pub. L. 102–496, set out as a note under section 2001 of this title.