((a)) ** .—** The Secretary of Homeland Security shall prescribe and enforce regulations on the boarding of a vessel arriving at a port of the United States before the vessel has been inspected and secured.
((b)) ** .—** A person violating a regulation prescribed under this section shall be fined under title 18, imprisoned for not more than 6 months, or both.
((c)) ** .—** This section shall be construed as supplementary to .