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 fresh, chilled or frozen lamb meat that is the subject of a tariff-rate quota, and the product of a participating country, as defined in interim regulations of the United States Trade Representative (USTR). The export certificate is necessary in this regard in order to enable the importer to claim the in-quota rate of duty on the lamb meat.