Pub. L. 110–234 and Pub. L. 110–246 enacted identical sections. Pub. L. 110–234 was repealed by section 4(a) of Pub. L. 110–246.

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

2014—Subsec. (b). Pub. L. 113–79 substituted “2018” for “2012”.

Enactment 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 a note under section 8701 of this title.