FMCSA Cracks Down on Mexican Carriers Running Illegal Cabotage Loads

What is cabotage and why is FMCSA targeting Mexican carriers now?

Federal Motor Carrier Safety Administration (FMCSA) enforcement teams are stepping up inspections of Mexican carriers operating in U.S. border zones, targeting illegal cabotage violations. Cabotage is the practice of a foreign carrier hauling freight between two domestic U.S. points without proper operating authority. Mexican carriers holding cross-border authority can legally haul loads from Mexico into the U.S. or from the U.S. into Mexico, but they cannot pick up a load in Texas and deliver it in Arizona without a separate U.S. domestic operating authority (MC number issued for interstate commerce).

The Trump administration has directed federal agencies to take a harsher stance on illegal activities involving Mexican drivers and trucking operators, according to a July 17 report. The enforcement push comes as cross-border freight volumes remain high and as USMCA faces rolling reviews that could reshape operating authority rules.

What Mexican carriers are allowed to do under current rules

Mexican carriers with USDOT numbers and cross-border operating authority can legally haul international loads. A Mexican carrier can pick up freight in Monterrey and deliver it to Dallas. That same carrier can pick up a return load in Dallas and haul it back to Monterrey. Both movements are legal because they cross the international border.

What is illegal: that same Mexican carrier picking up a load in Dallas and delivering it to Houston. That is a domestic U.S. movement, and it requires a separate U.S. interstate operating authority. A Mexican carrier running that load without the proper MC number is operating without authority, a violation that triggers fines, out-of-service orders, and potential revocation of cross-border privileges.

How FMCSA enforcement works in border zones

FMCSA enforcement personnel and state commercial vehicle enforcement officers conduct roadside inspections and weigh-station checks in border states. Inspectors verify the carrier's USDOT number, operating authority, cargo insurance, and the origin and destination of the load. If the bill of lading shows a domestic U.S. pickup and delivery and the carrier holds only cross-border authority, the driver and carrier face immediate penalties.

Out-of-service orders are issued on the spot. The truck cannot move until the carrier arranges a legal handoff to a U.S.-authorized carrier or until the load is transferred. Fines for operating without authority start at $16,000 per violation under 49 U.S.C. § 14901(a). Repeat violations can result in permanent revocation of the carrier's USDOT number and cross-border operating privileges.

Why cabotage violations hurt U.S. carriers

Cabotage rules exist to protect domestic carriers from foreign competition on U.S. soil. A Mexican carrier that runs illegal domestic loads undercuts U.S. carriers on price because the Mexican carrier avoids U.S. labor costs, U.S. insurance requirements, and U.S. tax obligations tied to domestic operating authority. The practice also creates an uneven playing field for U.S. carriers that invest in compliance, safety ratings, and domestic authority.

Small U.S. fleets operating in border zones report losing spot-market loads to Mexican carriers willing to run illegal cabotage moves at rates below the U.S. carrier's cost structure. The enforcement crackdown is intended to level that field and push Mexican carriers back into legal cross-border lanes.

What cross-border carriers must verify before accepting a load

Cross-border carriers must confirm the origin and destination of every load before dispatch. If both points are in the U.S., the carrier must hold U.S. interstate operating authority. If one point is in Mexico and one is in the U.S., cross-border authority is sufficient.

Dispatchers should flag any load offer that shows a U.S. pickup and U.S. delivery. Accepting that load without proper authority exposes the carrier to fines, out-of-service orders, and loss of cross-border privileges. Brokers and shippers offering those loads to Mexican carriers are also subject to penalties for aiding and abetting unauthorized operations.

What U.S. carriers should watch for in border-zone competition

U.S. carriers competing for loads in Texas, Arizona, New Mexico, and California should report suspected cabotage violations to FMCSA. The agency operates a National Consumer Complaint Database where carriers can file reports online. Include the Mexican carrier's USDOT number, the truck's license plate, the date and location of the suspected violation, and any bill-of-lading details if available.

FMCSA uses those reports to target enforcement resources. A pattern of complaints against a specific Mexican carrier can trigger a compliance review and expedited revocation proceedings.

How the Trump administration's stance affects enforcement priorities

The Trump administration has directed federal agencies to prioritize enforcement actions involving foreign carriers and drivers. That directive translates to more roadside inspections, more weigh-station checks, and faster processing of revocation cases for carriers caught running illegal cabotage loads.

Carriers holding both Mexican and U.S. operating authority are not immune. If a carrier uses its Mexican authority to run a domestic U.S. load instead of using its U.S. authority, FMCSA treats that as operating without proper authority for that specific movement. The carrier must match the authority type to the load type on every dispatch.

What to do if your fleet is caught in a cabotage inspection

If an inspector issues an out-of-service order for a cabotage violation, do not argue at the roadside. The driver must comply with the order immediately. Contact your compliance manager or attorney to arrange a legal handoff of the load to a U.S.-authorized carrier. Document the bill of lading, the load offer, and any broker communications that led to the dispatch.

File a DataQs challenge with FMCSA only if you believe the inspection was in error (for example, if the load was actually cross-border and the inspector misread the paperwork). Do not file a DataQs challenge to dispute the cabotage rule itself. The rule is settled law, and challenges on that basis are automatically denied.

What cross-border fleets must update in their dispatch procedures

Cross-border carriers should implement a pre-dispatch checklist that flags any load with both origin and destination in the U.S. Dispatchers must verify the carrier's operating authority type before accepting the load. If the carrier holds only cross-border authority, reject the load or refer it to a U.S. partner carrier.

Carriers operating both Mexican and U.S. fleets should segregate dispatch by authority type. Use Mexican authority only for cross-border loads. Use U.S. authority only for domestic U.S. loads. Do not mix authority types on the same truck in the same week unless you are certain each load matches the authority used for that dispatch.