For years, an importer with shaky country-of-origin paperwork could clear customs, sell the goods, and deal with any audit months or years down the road. That window just closed. On August 13, the White House's Office of Trade and Manufacturing Policy released a 25-page report — titled, without much subtlety, "The Great Transshipment Scam" — announcing that U.S. Customs and Border Protection is deploying a new AI system called Detective Border to flag suspect shipments before they're released, not after.
What Happened
The report estimates the U.S. is losing between $19 billion and $26 billion a year in tariff revenue to transshipment — the practice of routing Chinese-origin goods through a third country, relabeling or lightly processing them, and declaring that country as the true origin to dodge higher China-specific duties. Depending on methodology, the underlying value of illegally transshipped goods is pegged anywhere from $40 billion to over $300 billion annually; the administration's own "central case," built on analysis from supply-chain risk firm Exiger, lands at roughly $75 billion.
Detective Border, built with Exiger under a CBP contract awarded in October 2025, works by fusing several data layers: shipment routing history, corporate ownership graphs (tracing a nominal exporter back to its real beneficial owner), production-capacity analysis (flagging when a country's declared exports exceed what it could plausibly manufacture), and AI-trained review of CBP's X-ray and non-intrusive inspection imaging to catch mismatches between what's declared and what's actually in the container. The key shift: this scoring happens pre-clearance. A flagged container can be held and inspected before an importer ever takes possession — not audited retroactively after it's already been sold.
The report sorts more than 40 countries into three risk tiers. Tier 1 ("Diversified Scale Leaders") — Canada, the EU, India, Israel, Japan, Mexico, South Korea, Taiwan — are major legitimate trading partners the report says provide statistical cover for illicit flows. Tier 2 includes Brazil, Indonesia, Malaysia, Thailand, Turkey, and Vietnam. Tier 3 — transit hubs with elevated routing risk — includes Panama, Colombia, Costa Rica, Argentina, Chile, Peru, and the Dominican Republic.
That last group matters a lot to South Florida. Panama, Colombia, Costa Rica, and the Dominican Republic are core lanes for cargo moving through the Port of Miami and PortMiami-area distribution networks — meaning Detective Border's scrutiny lands squarely on trade patterns many local importers already rely on, legitimately or not.
What It Means for Importers
This isn't happening in isolation. It builds directly on Executive Order 14411, signed June 3, 2026, which is already rolling out in 45-, 90-, and 180-day phases toward full compliance by November 30, 2026. That order raises bonding and financial-asset requirements for importers of record, bars foreign IORs from filing informal entries, imposes a "good standing" gate that can lock a non-compliant importer out of the U.S. market, and sets a 50% minimum penalty floor with no mitigation for repeat offenders.
White House trade adviser Peter Navarro added a sharper detail on Bloomberg Television: importers found to have falsified country-of-origin can face tariffs applied retroactively for roughly the prior year — meaning exposure isn't limited to the flagged shipment, but potentially every entry that importer made over the preceding twelve months.
CBP's own numbers show the enforcement environment already shifting well ahead of Detective Border's full rollout: comparing the 526 days before and after January 2025, shipments flagged with post-release discrepancies rose 245%, and associated revenue assessments jumped from $9.6 billion to $25.8 billion.
Trade lawyers and industry voices have pushed back on parts of the report — the range of loss estimates spans a 7.5x spread depending on methodology, and even the administration acknowledges the hardest problem: distinguishing genuine "China Plus One" manufacturing diversification (assembly shifted in good faith to Vietnam, Mexico, or elsewhere since 2018) from deliberate pass-through fraud. Under 19 C.F.R. § 134.1(b), simple assembly generally does not count as "substantial transformation" — so a laptop assembled in Vietnam from Chinese components can still legally be Chinese-origin for tariff purposes, and misdeclaring it as Vietnamese-origin is exactly what Detective Border is designed to catch.
Practical Next Steps
- Audit your origin documentation now. Bills of materials tracing every input to its actual country of manufacture, factory production records for any transit-country processing, and value-added calculations should all be current and ready to survive a CBP field audit.
- Re-examine any multi-country supply chain, especially through Panama, Costa Rica, Colombia, or the Dominican Republic. If goods are lightly processed there before reaching Miami, be prepared to prove substantial transformation, not just re-routing.
- Check your bond coverage against EO 14411's tightening requirements — don't assume your existing bond is sufficient as bonding minimums rise through 2026.
- Don't treat "China Plus One" as automatic cover. Legitimate diversification still requires documentation proving real manufacturing capacity and transformation in the transit country — Detective Border is specifically built to spot capacity mismatches.
- Build in lead time for possible holds. Even importers with clean paperwork may see more shipments flagged for inspection simply by virtue of routing through a Tier 2 or Tier 3 country — plan schedules accordingly.
The bottom line
CBP's new Detective Border AI system moves transshipment enforcement from a slow, after-the-fact audit process to real-time, pre-clearance risk scoring — and several of the specifically named higher-risk transit countries are core lanes for Port of Miami trade. If any part of your supply chain touches Panama, Costa Rica, Colombia, the Dominican Republic, Mexico, or Vietnam, now is the time to have your origin documentation, production records, and value-added evidence ready before a shipment gets flagged — not after. Talk to your customs broker about a documentation review before your next entry.
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Guy Lichtenstein CHB Corp is a licensed U.S. customs broker (filer code 9UA) clearing shipments at every U.S. port — same-day filing, ISF included with ocean entries.
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