1988—Subsecs. (c), (d). Pub. L. 100–238, § 214(b), inserted “or a former spouse who is the natural or adoptive parent of a surviving child of the annuitant,” after “spouse”.

Subsec. (e). Pub. L. 100–238, § 215(b), substituted “60” for “65”.

1986—Subsec. (a). Pub. L. 99–335, § 402(c), substituted “part” for “chapter”.

Subsec. (b). Pub. L. 99–335, § 402(a)(2), substituted “part” for “subchapter”.

Amendment by Pub. L. 100–238 effective 90 days after Jan. 8, 1988, see section 261(a) of Pub. L. 100–238, set out as a note under section 4054 of this title.

Amendment by Pub. L. 99–335 effective Jan. 1, 1987, see section 702(a) of Pub. L. 99–335, set out as an Effective Date note under section 8401 of Title 5, Government Organization and Employees.