(a)Revocation and removal while vessel is in the United States. A crewman whose landing permit is subject to revocation pursuant to section 252(b) of the Act may be taken into custody by any immigration officer without a warrant of arrest and be transferred to the vessel of arrival, if the vessel is in any port in the United States and has not departed foreign since the crewman was issued his or her conditional landing permit. Detention and removal of the crewman shall be at the expense of the transportation