19 U.S.C. § 1442

Any vessel having on board merchandise shown by the manifest to be destined to a foreign port or place may, after the report and entry of such vessel under the provisions of this chapter, proceed to such foreign port of destination with the cargo so destined therefor, without unlading the same and without the payment of duty thereon. Any vessel arriving from a foreign port or place having on board merchandise shown by the manifest to be destined to a port or ports in the United States other than the port of entry at which such vessel first arrived and made entry may proceed with such merchandise from port to port or from district to district for the unlading thereof.