CBP Now Blocks Mexican Truckers at Border Using DOT Cabotage Records

U.S. Customs and Border Protection (CBP) agents are now stopping Mexican truckers with past cabotage violations from entering the country by checking federal transportation records at the border.

How does CBP check cabotage violations at the border?

CBP agents are using a system that pulls FMCSA (Federal Motor Carrier Safety Administration) violation histories in real time during border inspections. When a Mexican driver presents credentials at a port of entry, agents can see whether that driver or carrier has been cited for cabotage in the past. Drivers flagged in the system are denied entry on the spot.

Cabotage is the transport of goods between two points inside the United States by a foreign carrier. Mexican carriers operating under USMCA (United States-Mexico-Canada Agreement) cross-border authority are allowed to pick up loads in the U.S. and deliver them to Mexico, or vice versa. They are not allowed to haul freight from Dallas to Houston, or from Los Angeles to Phoenix. That domestic leg is reserved for U.S.-registered carriers.

What changed in enforcement

This marks the first time CBP has used DOT compliance data as a border-entry screen. Previously, cabotage enforcement fell to FMCSA roadside inspectors and state commercial vehicle enforcement officers. A Mexican carrier caught hauling domestic freight would receive a citation and a fine, but the violation did not automatically trigger a border-entry ban.

The new system connects two federal databases. DOT maintains records of safety violations, including cabotage citations. CBP now queries those records during primary or secondary inspection at the border. The result is immediate: a driver with a cabotage flag in the system is turned around before the truck crosses into U.S. territory.

The May visa revocation wave

CBP's new enforcement follows a May action that revoked U.S. visas for 3,200 Mexican drivers after DOT and CBP merged databases to flag cabotage violations. That wave targeted drivers who had been cited for illegal domestic hauls in the past 24 months. The visa revocations were administrative, processed through the State Department. Drivers received notice by mail and lost their ability to enter the U.S. for commercial purposes.

The June enforcement goes a step further. Instead of revoking visas after the fact, CBP is now screening drivers at the border in real time. A driver who still holds a valid visa can be denied entry if the system shows a cabotage violation on record. The border agent makes the call during the inspection, not weeks later through a mailed notice.

What cross-border carriers must audit now

Mexican carriers operating under USMCA cross-border authority need to audit their dispatch records and driver rosters immediately. Any driver who has hauled a domestic U.S. load in the past two years is at risk of being flagged at the border. Carriers should pull FMCSA inspection histories for every driver in their cross-border pool and check for cabotage citations.

If a driver has a cabotage violation on record, that driver should not be dispatched on a cross-border run until the carrier confirms the violation has been resolved or the driver's record has been cleared. There is no formal appeals process at the border. The CBP agent sees the flag and denies entry. The carrier loses the load, the driver loses the day, and the truck sits at the port of entry until a replacement driver can be sent.

Carriers should also review their operating authority. USMCA cross-border authority allows Mexican carriers to haul international loads (Mexico to U.S. or U.S. to Mexico). It does not grant domestic operating authority. A Mexican carrier that wants to haul freight between two U.S. cities must apply for a separate USDOT number and MC number as a U.S. domiciled carrier, meet the new-entrant safety audit requirements, and comply with all FMCSA regulations as a domestic carrier. Most Mexican carriers do not hold that authority and cannot legally haul domestic U.S. freight under any circumstances.

USMCA review and cabotage enforcement

The timing of CBP's new enforcement aligns with the USMCA review deadline on July 1. The trade agreement includes a six-year review clause. The U.S., Mexico, and Canada are required to meet and decide whether to renew the agreement for another 16 years or trigger rolling annual reviews. Cabotage rules are not up for renegotiation under USMCA, but enforcement of those rules has become a political pressure point.

U.S. trucking associations have lobbied for stricter cabotage enforcement for years, arguing that Mexican carriers undercut domestic rates by hauling illegal domestic loads. The May visa revocations and the June border screening represent the most aggressive federal response to date. Whether this enforcement continues past the USMCA review period depends on political decisions above the FMCSA and CBP level, but for now the system is live and carriers are being turned away.

What to do if a driver is denied entry

If a driver is denied entry at the border due to a cabotage flag, the carrier has three options. First, send a replacement driver with a clean record to take the truck and load across. Second, contact FMCSA to dispute the violation if the carrier believes the citation was issued in error. Third, wait for the violation to age off the driver's record, which typically takes 24 months from the date of the citation.

There is no same-day appeal process at the port of entry. The CBP agent is not authorized to override the system flag. The carrier must resolve the issue with FMCSA or the State Department before the driver can cross again. In the meantime, the load is stuck, and the carrier is responsible for finding an alternative way to move it.

Cross-border carriers should build a contingency plan for border denials into their dispatch workflow. That means maintaining a roster of drivers with verified clean records, keeping backup drivers on call near major ports of entry, and auditing FMCSA violation histories weekly instead of waiting for a border denial to surface a problem.