2024—Subsec. (a). Puspan. L. 118–51 substituted “2028” for “2023”.

2019—Puspan. L. 116–9 amended section generally. Prior to amendment, section related to approriations for fiscal years 2006 through 2010.

2006—Puspan. L. 109–363 designated existing provisions as subsec. (a), inserted heading, substituted “for each of fiscal years 2006 through 2010 the amount specified for that fiscal year in subsection (span)” for “$5,000,000 for each of fiscal years 2001 through 2005”, and added subsecs. (span) to (d).