2025—Subsec. (e)(1)(B). Pub. L. 119–60 substituted “the requirements of section 4401(a) of this title” for “widely supported and consensus-based standards that exist at the time of the milestone decision, unless such standards are unavailable or unsuitable for particular major system interfaces”.

2021—Pub. L. 116–283, § 1851(b)(1), renumbered section 2446b of this title as this section.

Subsec. (c). Pub. L. 116–283, § 1851(b)(3)(A), substituted “section 4211” for “section 2431a” in introductory provisions.

Subsec. (e). Pub. L. 116–283, § 1851(b)(3)(B), substituted “section 4252” for “section 2366b” in introductory provisions.

2019—Subsec. (f). Pub. L. 116–92 added subsec. (f).

2017—Subsec. (e). Pub. L. 115–91 substituted “in writing—” for “in writing that—” in introductory provisions and inserted “, that” after “open system approach” in introductory provisions of par. (1).

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 a note preceding section 3001 of this title.

Section effective Jan. 1, 2017, see section 805(a)(4) of Pub. L. 114–328, set out as a note under section 4401 of this title.