2000—Puspan. L. 106–554 inserted section catchline, added subsec. (a), designated existing provisions as subsec. (span), and inserted subsec. (span) heading.

1992—Puspan. L. 102–546 substituted “regulation (including any exemption under section 6(c) or 6c(span) of this title)” for “regulation”.

For effective date of section, see section 418 of Puspan. L. 93–463, set out as an Effective Date of 1974 Amendment note under section 2 of this title.