1998—Subsec. (a). Pub. L. 105–312, § 103(1), substituted “$15,000” for “$500”.

Subsecs. (c), (d). Pub. L. 105–312, § 103(2), (3), added subsec. (c) and redesignated former subsec. (c) as (d).

1986—Subsec. (b). Pub. L. 99–645 substituted “shall knowingly” for “shall” in introductory provisions.

1960—Pub. L. 86–732 designated existing provisions as subsec. (a), inserted “Except as otherwise provided in this section”, and added subsecs. (b) and (c).

1936—Act June 20, 1936, substituted “conventions” for “convention”.

Act June 20, 1936, ch. 634, § 2, 49 Stat. 1556, provided in part that the amendment by section 2 is effective as of the day aforesaid (June 30, 1937). See note under section 703 of this title.

For transfer of certain enforcement functions of Secretary or other official in Department of the Interior under this subchapter to Federal Inspector, Office of Federal Inspector for the Alaska Natural Gas Transportation System, and subsequent transfer to Secretary of Energy, then to Federal Coordinator for Alaska Natural Gas Transportation Projects, see Transfer of Functions note set out under section 706 of this title.