The date of the enactment of this subsection, referred to in subsec. (e), is the date of enactment of Pub. L. 108–357, which was approved Oct. 22, 2004.

2004—Subsec. (a)(2). Pub. L. 108–357, § 856(a), which directed amendment of par. (2) by striking “or”, was executed by striking “or” at the end.

Subsec. (a)(3). Pub. L. 108–357, § 856(b), substituted “alters, chemically or otherwise, or attempts to so alter,” for “alters, or attempts to alter,”.

Pub. L. 108–357, § 856(a), inserted “or” at end.

Subsec. (a)(4). Pub. L. 108–357, § 856(a), added par. (4).

Subsec. (e). Pub. L. 108–357, § 855(a), added subsec. (e).

1997—Subsec. (c)(1). Pub. L. 105–34 inserted “or kerosene” after “diesel fuel”.

1996—Pub. L. 104–188 renumbered section 6714 of this title as this section.

Pub. L. 108–357, title VIII, § 855(b), Oct. 22, 2004, 118 Stat. 1616, provided that: “The amendment made by this section [amending this section] shall apply to penalties assessed after the date of the enactment of this Act [Oct. 22, 2004].”

Pub. L. 108–357, title VIII, § 856(c), Oct. 22, 2004, 118 Stat. 1617, provided that: “The amendments made by this section [amending this section] shall take effect on the date of the enactment of this Act [Oct. 22, 2004].”

Amendment by Pub. L. 105–34 effective July 1, 1998, see section 1032(f)(1) of Pub. L. 105–34, as amended, set out as a note under section 4041 of this title.

Section effective Jan. 1, 1994, see section 13242(e) of Pub. L. 103–66, set out as an Effective Date of 1993 Amendment note under section 4041 of this title.