Pub. L. 110–234 and Pub. L. 110–246 made identical amendments to this section. The amendments by Pub. L. 110–234 were repealed by section 4(a) of Pub. L. 110–246.

2018—Subsec. (c)(2). Pub. L. 115–334 substituted “2023” for “2018”.

2014—Subsec. (c). Pub. L. 113–79 substituted “to carry out this section—” for “such sums as are necessary for each of the fiscal years 2002 through 2012 to carry out this section.” and added pars. (1) and (2).

2008—Subsecs. (c), (e). Pub. L. 110–246, § 7143(b), redesignated subsec. (e) as (c) and substituted “2012” for “2007”.

Amendment of this section and repeal of Pub. L. 110–234 by Pub. L. 110–246 effective May 22, 2008, the date of enactment of Pub. L. 110–234, see section 4 of Pub. L. 110–246, set out as an Effective Date note under section 8701 of this title.