A person is guilty of an offense if he willfully commits any act prohibited by section 2403(a) of this title.

Any offense described in subsection (a) is punishable by a fine of $10,000, or imprisonment for not more than one year, or both.

A conviction under subsection (a) for any act shall not be deemed to preclude a conviction for such act under any other law, including, but not limited to, the Marine Mammal Protection Act of 1972 [16 U.S.C. 1361 et seq.], the Endangered Species Act of 1973 [16 U.S.C. 1531 et seq.], and the Migratory Bird Treaty Act [16 U.S.C. 703 et seq.].