"This list is intended as a guide to assist you in preparing for your application for admission into the United States pursuant to NAFT A (TN). The information listed below is intended to help you in meeting eligibility requirements as well as in identifying any documentary deficiencies, if any, in support of your application. If your initial NAFTA TN application has been refused, CBP encourages you to return to the same port that issued you this guide once the deficient or lacking information, if any, is obtained. This list should not be considered to be all-inclusive." - CBP, undated.