1980—
Pub. L. 96–295 designated existing provisions as subsec. (a) and added subsec. (b).
1969—
Pub. L. 91–161 limited application of section to instances where no criminal penalties have been provided.
1967—
Pub. L. 90–190 substituted “(o)” for “(p)”.
Amendment by
Pub. L. 100–408 effective Aug. 20, 1988, but inapplicable to any violation occurring before Aug. 20, 1988, see section 20 of
Pub. L. 100–408, set out as a note under section
2014 of this title.