Cash awards for foreign language proficiency may, under regulations prescribed by the Secretary of the Treasury, be paid to customs officers (as referred to in section 267(e)(1) of this title) to the same extent and in the same manner as would be allowable under subchapter III of chapter 45 of title 5 with respect to law enforcement officers (as defined by section 4521 of such title).

Articles purchased for the use of or for sale on board any such vessel, as saloon stores or supplies, shall be deemed merchandise, and shall be liable, when purchased at a foreign port, to entry and the payment of the duties found to be due thereon, at the first port of arrival of such vessel in the United States; and for a failure on the part of the saloon keeper or person purchasing or owning such articles to report, make entries, and pay duties, as hereinbefore required, such articles, together with the fixtures and other merchandise, found in such saloon or on or about such vessel, belonging to and owned by such saloon keeper or other person interested in such saloon, shall be seized and forfeited, and such saloon keeper or other person so purchasing and owning shall be liable to a penalty of not less than $100 and not more than $500, and shall be punishable by imprisonment for not less than three months and not more than two years.

Documented vessels with a registry endorsement, engaged in foreign trade on the Great Lakes or their tributary or connecting waters in trade with Canada, shall not thereby become liable to the payment of entry and clearance fees.

Any United States documented vessel with a registry or coastwise endorsement, or both, may engage in trade between one port in the United States and one or more ports within the same, with the privilege of touching at one or more foreign ports during the voyage, and land and take in thereat merchandise, passengers and their baggage, and letters, and mails.

Any foreign merchandise taken in at one port of the United States to be conveyed in a United States documented vessel with a registry or coastwise endorsement, or both, to any other port within the same, either under the provisions relating to warehouses, or under the laws regulating the transportation coastwise of merchandise entitled to drawback, as well as any merchandise not entitled to drawback, but on which the import duties chargeable by law shall have been duly paid, shall not become subject to any import duty by reason of the vessel in which they may arrive having touched at a foreign port during the voyage.