46 USC 55334 – Restrictions on operations
(a)
(1) engage in trade—
(A) from a port in the United States that is not located on the Great Lakes; or
(B) between ports in the United States;
(2) transport bulk cargo (as defined in section 40102 of this title) that is subject to section 55305 or 55314 of this title or section 2631 of title 10; or
(3) provide a service (except ocean freight service) as—
(A) a contract carrier; or
(B) a common carrier on a fixed advertised schedule offering frequent sailings at regular intervals in the foreign trade of the United States.
(b)