; and (II) pays the fee assessed under subparagraph (B). (ii) Penalty Notwithstanding any other provision of law, if, at the time of importation of the cargo or freight from a qualifying importing voyage into the United States, an importer described in subparagraph (A)(i) cannot provide proof of payment of the fee assessed under subparagraph (B), the Commissioner of U.S. Customs and Border Protection shall seize the cargo or freight until the Administrator informs the Commissioner of U.S. Customs and Border Protection that all outstanding fees assessed under subparagraph (B) have been paid. (d) Recognition of foreign pollution fees If a vessel with cargo or freight ultimately bound for the United States, or an operator of such a vessel, is subject to a pollution-based fee by the country of the port of origin of the vessel, any fee assessed on the operator of the vessel or an importer with cargo or freight on that vessel under this section shall be— (1) if the fee from the other country is equal to or more than 50 percent of the fee that would otherwise be assessed under this section, reduced by 50 percent