This document amends the Customs Regulations on an interim basis to set forth the form and manner by which an importer establishes that a valid export certificate is in effect for certain sugar- containing products subject to a tariff-rate quota, that are products of a participating country, as defined in an interim rule of the United States Trade Representative (USTR). The export certificate is necessary to enable the importer to claim the in-quota rate of duty on the sugar- containing products.