Freight between Canada
and Mexico.

A Canada to Mexico truck move is not one journey, it is three legs stitched together. A Canadian or US carrier runs the freight to the Texas border. At Laredo, or whichever gate the lane uses, the trailer moves through a transfer yard where the load is handed to a Mexican carrier, often via a short-haul transfer operator that shuttles between the two customs facilities. A Mexican carrier then runs the final leg. Through-trailer service exists on some lanes, but interchange is the normal model, and a quote that quietly assumes otherwise is a quote that will be revised later.

The interchange is where freight goes missing, arrives damaged, or simply stops for two days without anyone being able to say why. It is also entirely manageable. What manages it is planning the handover rather than discovering it: which transfer yard, which Mexican carrier, what seal number goes on at origin and who records it at each change, and who is accountable for the trailer at each point. We book the whole chain rather than handing the freight to a US carrier and hoping the rest resolves itself.

The value of one file across the whole move is that nobody has to reconcile three versions of the story. One reference number from pickup in Ontario to delivery in Querétaro, one point of contact, and one set of documents that the Canadian carrier, the US carrier, the Mexican carrier, your customs broker and the Mexican customs broker are all working from. That is the difference between a Mexico lane that runs and one that is a monthly argument.

Mexican customs is not a harder version of US customs, it is a different structure. The central document is the pedimento, the customs declaration that governs the shipment on the Mexican side, and it is filed by a licensed Mexican customs broker known as an agente aduanal. For most imports that broker is a legal requirement rather than a service the importer can choose to skip. A Canadian shipper who has only ever moved freight into the United States is often surprised by this, and the surprise is expensive when it arrives at the border rather than at the quoting stage.

The pedimento is only as accurate as the commercial documents behind it. Descriptions, values, classifications, quantities and the identity of the importer all flow from what the shipper supplies. Where those are vague or inconsistent, the broker cannot fix them from the Mexican side, and the freight waits while somebody in Canada is asked to clarify something they could have stated correctly two weeks earlier.

Then there is the Carta Porte, the complement to the Mexican electronic invoice that has to accompany goods moving inside Mexico. It is the Mexican carrier obligation to file it, so it is not something a Canadian shipper files directly, but it is built from shipment data. Our part is making sure the data reaching the Mexican carrier and the Mexican broker is the same data on your invoice, in a form they can actually use.

The creation of CPKC produced something North American freight did not previously have: a single railway with a continuous route from Canada, through the United States, into Mexico. Before that, freight going by rail to Mexico had to be interchanged between railways, and an interchange is not just a delay, it is a point where accountability changes hands and where a shipment can sit while two railways agree whose problem it is. Removing the interchange changed rail from a theoretical option into a practical one for a lot of Canadian freight.

Rail is not automatically cheaper in a way that always wins. It is cheaper per unit and slower door to door, and the distance from the border is what decides whether the trade is worth it. Freight going to Monterrey, a few hours from Laredo, gains almost nothing from being put on a train. Freight going to Querétaro, San Luis Potosí, Mexico City or Guadalajara covers enough Mexican distance that the rail leg does real work, and the cost difference becomes material rather than marginal.

The honest framing for a shipper is a trade between money and time, with inventory as the tiebreaker. Rail to the Bajío is typically 10 to 14 days against 7 to 9 by truck. If the freight is replenishment stock on a predictable schedule, those extra days cost very little and the saving is real. If it is production-critical or the customer is waiting, truck earns its premium. We quote both where both are sensible rather than defaulting to whichever is easier to arrange.

CUSMA replaced NAFTA as the agreement governing trade between Canada, the United States and Mexico, and it is the reason a great deal of freight moves across these borders at preferential rates. What it does not do is make everything shipped from Canada duty free. Preferential treatment depends on the goods meeting the rules of origin, and on a valid certification of origin supporting the claim. Those are two separate requirements and both have to hold.

Origin is about where the goods were produced and what went into them, not about where they were loaded. A product assembled in Ontario from components that do not qualify may not itself qualify. A product shipped from a Canadian warehouse but manufactured elsewhere almost certainly does not. This is the shipper knowledge that no carrier or freight brokerage can supply, and getting it wrong does not usually stop the truck at the border. It surfaces later, at audit, with interest.

Where the goods do qualify, the certification has to be right and it has to be available. Where they do not, the correct answer is to pay the duty rather than to claim a preference that will not survive scrutiny. We raise this at quote stage because it changes the landed cost, and a landed cost that turns out to be wrong after the fact is worse than a higher number stated honestly at the start.

A large share of northbound Mexico freight is fresh produce, and it is unforgiving. The cold chain has to hold through two customs processes and at least one carrier change, and the temperature record is part of the shipment rather than a technicality. Agricultural inspection adds a step that is not present on manufactured goods, and Pharr in particular exists as a produce gate for exactly this reason.

Southbound, the same equipment carries food, beverage and pharmaceutical products into a growing consumer market, with the same requirement for a continuous record and the same exposure at the interchange. The point in the move where a reefer trailer is handed from one carrier to another is the point where continuity is most often broken, and it is broken by nobody being explicitly responsible for the download rather than by anyone doing anything wrong.

The practical answer is to specify it. Which temperature, measured where, recorded by what, downloaded by whom and at which points, and what happens if a reading falls outside range. Written into the rate confirmation, that turns a foreseeable dispute into a procedure. Left unsaid, it turns into a claim conversation weeks later where nobody can produce a complete record.

Cargo security in Mexico is a subject that gets either exaggerated into a sales pitch or ignored entirely, and neither serves a shipper. The accurate position is that risk varies significantly by corridor, by commodity and by time of day, that some lanes carry a genuine planning requirement, and that many carry no more exposure than an equivalent US lane. Treating every Mexican shipment as high risk inflates rates for no benefit. Treating none of them as such is how a load disappears.

Where the exposure is real, the response is specific rather than general: carriers with an actual record on that lane rather than a general reputation, agreed routing rather than driver discretion, stop discipline that limits where and for how long a loaded trailer sits, and tracking with agreed check-call intervals so that a deviation is noticed within hours rather than at delivery. For high-value freight, escorted or convoy movement is available and is priced as what it is.

What we will not do is quote a security premium on a lane that does not need one, or leave a shipper to discover at dispatch that the freight they thought was covered is not. The exposure, the mitigation and what each costs go in the quote so the decision belongs to the shipper rather than to whoever answered the phone.