• To : ACE Portal Accounts
Subject: The Following Expired and Expiring CBP Forms Remain in Effect, Form: 434, 434A, 446, 449, and 450
Please be advised that the following CBP forms will remain effective subsequent to their 
expiration dates:

CBP Form 434, North American Free Trade Agreement Certificate of Origin

CBP Form 434A, North American Free Trade Agreement Certificate of Origin Continuation Sheet

CBP Form 446, NAFTA Verification of Origin Questionnaire

CBP Form 449, Andean Trade Promotion and Drug Eradication Act (ATPDEA) Certificate of Origin

CBP Form 450, United States-Caribbean Basin Trade Partnership Act (CBTPA) Certificate of Origin

Forms with future expiration dates will be posted as they become available to the CBP.gov website at:  http://cbp.gov/xp/cgov/toolbox/forms/

Please direct any questions concerning this guidance to Mr. Seth Mazze, International Coordination Branch, ([email protected]).

For additional information on preferential trade programs, please visit the CBP International Agreements pages at:

http://www.cbp.gov/xp/cgov/trade/trade_programs/international_agreements/