Nobody sets out to file a bad USMCA claim. The goods are North American, the supplier is known, the relationship is long. Then CBP issues a request for information, the certification produced names the producer as the certifier without the required statement, omits the certifier's contact details, covers a blanket period the importer cannot support with identical goods, and the preference claim collapses into an MFN assessment plus a lesson in paperwork. USMCA preference is a documentary system. Origin is the fact. The certification, complete in its minimum data elements under Annex 5-A, is the evidence CBP will accept for that fact.
The nine elements, and the ones that get missed
The certification must identify the certifier and state whether they are the importer, exporter, or producer, give the certifier's name, title, company, address, phone, and email, identify the exporter, producer, and importer where different, describe the goods with their HS classification to six digits, state the origin criterion relied on, give the blanket period where used, and carry an authorised signature and date with the prescribed certification language. In practice the failures cluster: producer certifications signed by a sales contact with no statement of role, blanket certifications stretched across product variants that are not identical goods, and origin criteria stated as a letter with no supporting worksheet showing the regional value or tariff shift analysis behind it.
Importer certifications raise the bar, usefully
USMCA allows the importer to certify, which the old NAFTA certificate did not, but the permission comes with a condition that is often skipped in the fine print of enthusiasm: the importer must hold the documentation supporting origin, including production and cost records from the producer, and produce it on request. An importer certification signed on the strength of a supplier's assurance email is a claim without a file. Where the producer will not share costed records, that is information about the strength of the claim, and the prudent course is to enter at MFN and pursue the records, or take a producer certification where the producer holds the evidence and signs for it.
Blanket periods and identical goods
A blanket certification can cover multiple shipments of identical goods for up to twelve months. Identical does the work in that sentence. A product family with varying materials, a seasonal change of component origin, or a mid year supplier switch breaks identity, and shipments after the break need their own analysis. Maintain the link between each entry claiming preference and the specific certification covering it, by product and date, in the entry packet. When a verification questionnaire arrives years later, and under USMCA it can, reconstructing which certification supported which entries from memory and inbox archaeology is the failure mode this filing habit exists to prevent.
When CBP verifies, respond to the record
Verification can arrive as a questionnaire to the importer, exporter, or producer, or as a visit for producers in the other parties' territory. Deadlines are real and extensions are discretionary. The response that works is the file built at entry: certification, origin worksheet, bills of material, supplier declarations for non originating materials, and the calculation for the criterion claimed. If the file cannot support the criterion, say so early with counsel involved, correct future entries, and consider the disclosure position on past ones. A preference denied on a weak file is a duty bill. A pattern of unsupported claims is a penalty conversation, and the distance between those outcomes is mostly how the importer behaves once the question is asked.
Keep reading
Related guides on this site: Section 301 Exclusions: How the Request Process Works and Why Most Fail Foreign Trade Zone Basics: What Admission Does and Does Not Do to Duty Answers for teams shipping Shopify orders across borders.
Frequently asked questions
Who can certify origin under USMCA?
The importer, exporter, or producer can complete the certification. There is no prescribed government form, but the certification must contain the nine minimum data elements in Annex 5-A and the prescribed statement.
What is a blanket certification?
A single certification covering multiple shipments of identical goods over a period of up to twelve months. Shipments of goods that are not identical, or whose origin changes, need separate support.
What happens if CBP denies a USMCA claim?
Duty is assessed at the MFN rate for the affected entries, with interest. Repeated or unsupported claims can lead to penalties, so importers should correct the file and future entries promptly.