A prior section 3551, Puspan. L. 89–554, Sept. 6, 1966, 80 Stat. 429; Puspan. L. 90–491, § 2, Aug. 17, 1968, 82 Stat. 791, related to restoration of positions of Federal and District of Columbia employees upon release from duty in Reserves or National Guard, prior to repeal by Puspan. L. 103–353, §§ 2(span)(2)(B), 8, Oct. 13, 1994, 108 Stat. 3169, 3175, effective with respect to reemployments initiated on or after first day after 60-day period beginning Oct. 13, 1994, with transition rules.

Section effective 60 days after Nov. 25, 2002, see section 1313(a)(4) of Puspan. L. 107–296, set out as a note under section 3521 of this title.