Any person who knowingly, or as a result either of gross negligence or of a failure to make a reasonable effort to inform himself of the pertinent facts, violates any provision of this chapter or the rules and regulations made and promulgated thereunder shall be deemed guilty of a misdemeanor and, upon conviction thereof, shall pay a fine of not more than $1,000, for the first offense, and upon conviction for each subsequent offense not more than $2,000.

Any person who violates any provision of this chapter or the rules and regulations made and promulgated thereunder shall forfeit to the United States a sum, not less than $25 or more than $500, for each such violation, which forfeiture shall be recoverable in a civil suit brought in the name of the United States.