The Other Half of the File: CBP Moves to Collect the Export Paperwork Too

Executive Order 14411 has now produced its third implementation in under a month. On August 19th, CBP announced it would start voiding importer numbers over inaccurate Form 5106 data. On September 1st, the order’s penalty mitigation floors took effect, as we covered in Show Your Work. And on September 2nd, 2026, CBP published an advance notice of proposed rulemaking titled Heightened Import Disclosures for Supply Chain Visibility (91 FR 56408, docket USCBP-2026-1058).

An advance notice is not a rule. It is a set of questions, 64 of them in this case, and CBP says the answers “will be used, potentially, to draft a Notice of Proposed Rulemaking.” Nothing changes on any filing tomorrow. But the questions describe, in more detail than anything CBP has published before, what the agency wants the import file to look like. Comments are due December 1st, 2026, and the questions are worth reading now, because the shape of the answer is already visible in them.

What CBP is asking about

The notice is organized around three areas. Two of them land directly on the document bundle.

The export paperwork

The first, and the most consequential for anyone who assembles an entry, is foreign export documentation: the paperwork the exporter was required to submit to its own customs authority before the goods left. CBP lists what that may include:

• Export declarations, with the value, classification, and quantity declared to the exporting country
• Commercial invoices showing the transaction value
• Packing lists verifying contents, weight, and packaging
• Certificates of origin
• Export licenses or permits for controlled goods
• Transport documents, meaning bills of lading and air waybills

Five of those six are already in a well-assembled import file. The sixth is not. The export declaration is a document most importers have never seen, filed by a party they may never deal with directly, to an authority whose records CBP does not currently have access to. It states the goods’ origin, classification, value, and quantity, under penalty in the country of export, before the US entry was ever prepared.

The notice does not assume the answer on how this would work. Question 2 asks whether the documentation should be “transmitted to CBP as part of an entry or entry summary filing, or should foreign export documentation be a recordkeeping requirement” under 19 U.S.C. 1508. Other questions ask whether it should apply to all imports or only certain categories, whether submission should be mandatory or randomized, how long records should be kept, and, in Question 17, “how should CBP address foreign export documentation that is not in English?”

Who the parties actually are

The second area is party identification. For decades the entry has identified the manufacturer through the Manufacturer Identification Code, a string built from the country, abbreviated name, address number, and city. CBP now says plainly that the MID “provides limited identifying information and does not always identify the actual party” it needs for enforcement, and that the same MID can end up attached to multiple entities. The notice asks whether to replace it with actual identifying data: full legal names, physical addresses, or a global business identifier for the manufacturer, shipper, and exporter. Four identifiers are named, all already accepted in CBP’s voluntary test: D-U-N-S, the Global Location Number, the Legal Entity Identifier, and Altana ID.

One question reaches past the consignee entirely. Question 34 asks whether CBP should “require the identification of the party to which the merchandise is ultimately intended to be delivered, who may not be the initial recipient or the consignee taking custody of the goods upon arrival.” Read together with the 5106 accuracy notice, the direction is the same: the identities in the file are becoming data CBP intends to verify, not labels it accepts.

Tracing technology and CTPAT

The third area asks what supply chain tracing technology importers use today, how they verify supply chain data, what role AI plays, and what any of it costs for small versus large businesses. For the Customs Trade Partnership Against Terrorism, CBP floats making enhanced tracing technology a membership requirement, adding cybersecurity and data integrity conditions, and prohibiting the use of logistics platforms identified as a security risk, naming LOGINK. The notice also observes that small businesses make up roughly 70 percent of CTPAT membership, which is the closest it comes to acknowledging where that burden would fall.

The question that gives the game away

The stated purpose is illegal transshipment, which the notice defines as “routing goods through a third country to obscure or misrepresent their true country of origin.” Origin on the US entry is a legal conclusion, and the enforcement problem has always been that the entry is a self-declaration. An export declaration lodged in the country of export is a second, independent statement of origin, classification, and value, made to a different government, before the goods moved.

Which makes Question 11 the one to read twice. CBP asks: “What internal controls and reconciliation processes should importers implement to identify discrepancies between the information on foreign export documentation and the entry or entry summary filed with CBP?”

That is the model of enforcement in one sentence. Not a new form, not a new rate. A comparison. The export side of the shipment says one thing; the import side says another; the discrepancy is the finding. It is the same logic officers already apply across the documents of a bundle, extended to a document that so far sat on the far side of the border. An importer who cannot run that comparison before filing will have CBP run it afterward.

There is a preview of the destination already in ACE. Since July 30th, entries of copper wire and cable under four tariff lines of heading 8544 have had to report the primary country of smelt and the country of cast, facts that live in a mill certificate from a supplier two tiers up. From September 14th, 2026, ACE returns a fatal error and rejects the entry summary when they are missing. An upstream supply chain fact has become a mandatory entry field, and the shipment does not clear without it. The advance notice is asking how far to extend that pattern.

What to do before December 1st

The notice is a request for comment, and the most useful thing many readers can do is answer it. The rest is preparation that pays off whatever the final rule says.

1. Comment, with numbers. The questions on cost, timing, and small business burden are open, and forwarders and brokers should note that the notice contemplates obligations extending beyond the importer of record to the parties who handle the goods and the data. A comment that says “this is hard” is discounted; a comment that says how many hours per entry, and where the data gap sits, is not. Docket USCBP-2026-1058 at regulations.gov.

2. Test whether you can get an export declaration today. Pick a live shipment and ask the supplier for a copy of what they filed with their customs authority. The answer, and how long it takes, tells you more about your exposure than any reading of the notice. Some will send it in an hour. Some cannot, because their forwarder filed it, or because local law or local habit treats it as private.

3. Reconcile what you already hold. The exporter’s invoice, the packing list, the certificate of origin, and the bill of lading are in the file now. If value, quantity, six-digit classification, origin, and party names do not agree across them, the export declaration will not agree either, and the discrepancy is already sitting in your records under the September 1st mitigation floors.

4. Clean up party master data. Full legal names and physical addresses for every manufacturer, shipper, and exporter you use, not the abbreviations a MID tolerates. If your largest suppliers already hold an LEI or D-U-N-S number, record it. The notice makes clear those identifiers are where CBP is heading.

5. Decide a translation path. Question 17 is open, but a rule that accepts foreign-language documents will almost certainly want key fields in English alongside them. Know which of your trade lanes produce non-English paperwork and what it would take to read it reliably.

Where the document layer fits

Most of what the notice asks for is information about the goods and the parties that lives with suppliers and in registries, and no software on the importer’s side conjures it. What software can do is the part CBP put in Question 11: run the reconciliation, every shipment, before filing.

That is the work CargoLint does. It reads the four documents on CBP’s list that an import file already contains, commercial invoices, packing lists, bills of lading, and certificates of origin, and extracts value, quantity, classification, origin, and party names at line level with per-field confidence, so a value read from a faint scan surfaces rather than passes. Its shipment consistency checks then compare the documents against each other: HS codes across the bundle, quantities and values between invoice and packing list, origin against the routing on the bill of lading, and party names and addresses between documents. Parties are kept as a learned set, so a manufacturer that appears under three spellings across a quarter shows up as the drift it is.

Every finding is advisory. A flagged discrepancy shows that two records disagree, not which one is right, and every resolution is recorded, which is the difference between asserting that the file was reconciled and being able to show it. When the export declaration eventually joins the bundle, it is one more document to compare against a file that already agrees with itself.

The fastest way to see how well your own bundles reconcile today: run a recent shipment through the free trial, or send us a bundle for a free accuracy audit.

CargoLint provides document automation software, not customs brokerage or legal advice. The September 2nd notice is an advance notice of proposed rulemaking and imposes no requirements; consult your broker or counsel on how any eventual rule would apply to your entries.