The text of subsec. (b) of section 2334 of this title, which was transferred to this section and amended by Pub. L. 116–283, § 1812(c), was based on Pub. L. 114–328, div. A, title VIII, § 842(a)(4), Dec. 23, 2016, 130 Stat. 2288.

A prior section 3222, act Aug. 10, 1956, ch. 1041, 70A Stat. 176; Pub. L. 96–513, title V, § 502(7), Dec. 12, 1980, 94 Stat. 2909, related to authorized strength of Army Reserve, exclusive of members on active duty, prior to repeal by Pub. L. 103–337, div. A, title XVI, §§ 1662(a)(3), 1691, Oct. 5, 1994, 108 Stat. 2988, 3026, effective Dec. 1, 1994. See section 12002(a) of this title.

2024—Subsec. (a). Pub. L. 118–159, § 806(b)(3)(B), which directed substitution of “authority that includes a cost estimate” for “authority that—” in introductory provisions, par. (1), and “(2) for the for the engineering and manufacturing development phase, or production and deployment phase, includes a cost estimate”, was executed by making the substition for “authority that—” in introductory provisions, par. (1), and “(2) for the engineering and manufacturing development phase, or production and deployment phase, includes a cost estimate”, to reflect the probable intent of Congress.

Pub. L. 118–159, § 806(b)(3)(A), substituted “the engineering and manufacturing development phase, or production and deployment phase,” for “a milestone phase” in introductory provisions.

2021—Subsec. (a). Pub. L. 116–283, § 1812(c)(1), (2)(A), (D), redesignated subsec. (b) of section 2334 of this title as subsec. (a) of this section, substituted “Requirement” for “Independent Cost Estimate Required Before Approval” in heading, struck out par. (1) designation before “A milestone”, and redesignated subpars. (A) and (B) as pars. (1) and (2), respectively.

Subsec. (b). Pub. L. 116–283, § 1812(c)(2)(B)–(D), redesignated subsec. (a)(2) as (b), inserted heading, substituted “section 3221 of this title” for “subsection (a)” in introductory provisions, and redesignated subpars. (A) and (B) as pars. (1) and (2), respectively.

Section and amendment by Pub. L. 116–283 effective Jan. 1, 2022, with additional provisions for delayed implementation and applicability of existing law, see section 1801(d) of Pub. L. 116–283, set out as an Effective Date of 2021 Amendment note preceding section 3001 of this title.