Based on title 18, U.S.C., 1940 ed., § 281 (Mar. 4, 1909, ch. 321, § 167, 35 Stat. 1120).

Reference to persons causing or procuring was omitted as unnecessary in view of definition of “principal” in section 2 of this title.

Changes were made in phraseology.

1994—Pub. L. 103–322, which directed the amendment of this section by substituting “fined under this title” for “fined not more than $2,000”, was executed by making the substitution for “fined not more than $3,000”, to reflect the probable intent of Congress.