On July 1, 2020, US Customs and Border Protection (CBP) published in the Federal Register a general notice that announces a modification to the Automated Commercial Environment (ACE) National Customs Automation Program (NCAP) reconciliation prototype test to include the flagging for filing of post-importation preferential treatment claims arising under the Agreement Between the United States of America, the United Mexican States, and Canada (the USMCA) as implemented pursuant to the United States-Mexico-Canada Agreement Implementation Act (the USMCA Act). Importers may file USMCA post-importation claims for refunds of certain duties assessed on merchandise that both qualifies for preferential tariff treatment under the USMCA and was entered for consumption, or withdrawn from warehouse for consumption, on or after July 1, 2020. Unless and until the USMCA Act is subsequently amended, refunds for merchandise processing fees (MPF) are excluded from USMCA post-importation claims. Except to the extent expressly announced or modified by the Federal Register document, all aspects, rules, terms and conditions announced in previously published Federal Register notices regarding the test remain in effect.

The test is modified to allow reconciliation of post-importation preferential tariff treatment claims to be filed on or after July 1, 2020, for refunds of certain duties assessed on merchandise that both qualifies for preferential tariff treatment under the USMCA and was entered for consumption, or withdrawn from warehouse for consumption, on or after July 1, 2020.