2021—Subsec. (a). Pub. L. 116–283 inserted “and 3 Polar Security Cutters in addition to those approved as part of a major acquisition program on November 1, 2019” before period at end.

Subsec. (b)(4). Pub. L. 117–81 substituted “section 3501” for “section 2306b”.

Pub. L. 115–282, title III, § 311(e), Dec. 4, 2018, 132 Stat. 4249, provided that: “Not later than 180 days after the date of enactment of this Act [Dec. 4, 2018], the Secretary of the department in which the Coast Guard is operating shall establish the internal regulations and policies necessary to exercise the authorities provided under this section [enacting this section, amending section 501 of this title, enacting provisions set out as a note under section 1133 of this title, amending provisions formerly set out as a note under former section 573 of this title, and repealing provisions set out as notes under former sections 87 and 577 of this title], including the amendments made in this section.”