CBP Wants Your Supplier's Export Paperwork Too — New Rulemaking Could Reshape What Every Importer Must Keep on File

On September 2, 2026, U.S. Customs and Border Protection published an advance notice of proposed rulemaking that, if it eventually becomes a final rule, would change what small and mid-size importers need to know about their own supply chains — not just what happens once a container reaches U.S. soil, but what their overseas suppliers filed with their own governments before the goods ever left the dock.

What Happened

CBP's Heightened Import Disclosures for Supply Chain Visibility ANPRM is a direct product of Executive Order 14411, Strengthening Customs Enforcement, which President Trump signed on June 3, 2026. We covered the early rollout of that order in our piece on how CBP is turning customs brokers into the front line of enforcement, and again when CBP moved to start voiding importer-of-record numbers over inaccurate 5106 data. This ANPRM is the next phase: instead of just tightening what CBP checks against the entry you file, the agency is asking whether it should require you to hold documentation that currently lives entirely on the export side of the transaction.

Per CBP's own September 2 press release, the notice covers three broad areas: (1) collecting foreign export documentation that exporters already file with their own customs authorities before shipping to the U.S.; (2) improving how CBP identifies the actual parties behind a shipment — manufacturer, shipper, and seller — potentially through new Global Business Identifiers instead of, or alongside, the current Manufacturer Identification Code; and (3) exploring supply-chain tracing technology and an expanded role for the CTPAT program. CBP Commissioner Rodney Scott framed it plainly: "Knowing what is coming into this country is vital to our national security."

Critically, an ANPRM is not a proposed rule and not a final rule — it's CBP asking the trade community more than 40 detailed questions (spanning the Federal Register notice at 91 FR 56408) before it drafts anything binding. Nothing changes for your entries today. But the questions themselves telegraph where CBP is headed: whether importers should be required to obtain a supplier's export declaration, commercial invoice, packing list, certificate of origin, or export license and reconcile that data against the entry summary filed with CBP — and what evidence an importer should provide if the numbers don't match.

What It Means for Importers

If any version of this eventually becomes a binding rule, it shifts real work onto the importer side of the relationship. Right now, U.S. importers generally only have visibility into what they file with CBP — the commercial invoice, entry summary, and related paperwork. Under the concepts floated in this ANPRM, importers or their brokers could be expected to also hold the paperwork the overseas factory or trading company filed with its own government before the goods left, and to be ready to explain any discrepancy in value, quantity, or classification between the two records.

For a small or mid-size importer sourcing from multiple factories across Asia or Latin America, that's a meaningfully bigger compliance lift than it sounds. Many overseas suppliers don't proactively share their own export filings, some jurisdictions restrict what exporters can disclose, and reconciling foreign-language export paperwork against a U.S. entry summary is not something most importers' back offices are built to do today. The MID/Global Business Identifier questions matter too — CBP is asking whether importers should be required to obtain and disclose entity-level identifiers like D-U-N-S numbers or Legal Entity Identifiers for their manufacturer, shipper, and seller, which assumes those parties are willing (and able) to obtain and share them.

The good news: none of this is mandatory yet, and CBP explicitly says it wants to hear about the burden on small businesses before finalizing anything. That's exactly why the comment window matters. Trade associations, brokers, and individual importers who weigh in before December 1 have a real chance to shape how workable (or unworkable) the eventual rule is for companies that don't have in-house trade compliance departments.

Practical Next Steps

• Start a supplier documentation inventory now. For your top suppliers by volume, find out whether they can readily produce their own export declarations, certificates of origin, and export licenses if asked — don't wait for a final rule to discover they can't.
• Watch for discrepancies between your invoices and any export paperwork you already receive. If your commercial invoices, packing lists, or COOs don't match cleanly today, that's worth fixing before it becomes a compliance requirement instead of good practice.
• Consider submitting a comment. Docket USCBP-2026-1058 is open at regulations.gov through December 1, 2026. If a documentation-reconciliation requirement would be especially burdensome for your supply chain, CBP is asking to hear it directly.
• Loop in your broker early. A licensed customs broker who already tracks your entry data can help flag where supplier paperwork gaps exist before CBP starts asking questions on an entry-by-entry basis. If you need a customs compliance review or import quote, our team can walk through your current documentation chain with you.

Frequently Asked Questions

Is CBP's new supply chain visibility rule already in effect?

No. As of September 3, 2026, CBP has only published an advance notice of proposed rulemaking (ANPRM), which is a request for public comment, not a binding regulation. Any actual rule would go through a separate proposed rule and final rule stage after the comment period closes on December 1, 2026.

What is CBP actually asking for comments on?

CBP is asking whether importers should be required to collect and retain foreign export documentation (such as export declarations, invoices, packing lists, and certificates of origin) from their suppliers, and whether new Global Business Identifiers like D-U-N-S, GLN, LEI, or Altana ID numbers should replace or supplement the current Manufacturer Identification Code system.

How do I submit a comment on the ANPRM?

Comments can be submitted through the Federal eRulemaking Portal at regulations.gov under docket number USCBP-2026-1058. CBP must receive comments on or before December 1, 2026.

How does this relate to Executive Order 14411?

This ANPRM implements Section 3 of Executive Order 14411, "Strengthening Customs Enforcement," signed June 3, 2026, which directed the Department of Homeland Security to increase transparency into importers' supply chains and require disclosure of foreign business identifiers and export-side documentation.