What happens to passenger rail and freight rail?

The trains keep running, and the freight network barely notices the border, because the railroads that matter most to Texas are privately owned and already run trains across international lines every day. Passenger service continues through the same kind of cross-border cooperation that runs trains between countries elsewhere. Freight, which is the part of rail that actually drives the Texas economy, is owned and operated by private companies whose tracks already cross into Mexico and Canada.

Freight rail is privately owned, and it already crosses borders

This is the heart of it. America's freight railroads overwhelmingly own, build, maintain, and pay for their own track, roughly 140,000 miles of it, with little government money. These are private companies, and they already run freight trains across the US-Mexico and US-Canada borders constantly, because goods do not stop at a line on a map. An independent Texas does not need to nationalize, rebuild, or untangle the freight network. The same private railroads keep owning their Texas track and keep running the same trains across the border, because that is their business and it is enormously profitable. Cross-border freight rail is not a hypothetical for an independent Texas; it is the daily normal of North American railroading.

The freight network is built for international operation already

Because the major railroads operate in the United States, Mexico, and Canada at once, the rail system is already engineered to work across sovereign borders, with customs handled at crossing points and interchange between carriers as routine practice. A Texas-US rail border would be one more crossing in a network full of them. The trade that moves by rail, part of the more than $300 billion a year in two-way Texas-Mexico commerce alone, gives every railroad and both governments a powerful interest in keeping the freight moving. Rail is one of the least disrupted pieces of independence precisely because it was never organized around political boundaries in the first place.

Passenger rail continues through cross-border cooperation

Passenger service between countries is also ordinary. Trains carry passengers across international borders elsewhere in the world, with customs and immigration handled at stations or onboard. In the United States, intercity passenger rail is run by Amtrak, which owns most of the Northeast Corridor but runs over 70 percent of its trains on tracks owned by the private freight railroads. Whatever the future of any specific Texas passenger route, the model for running passenger trains across a border is well established, and an independent Texas would coordinate cross-border service the same cooperative way neighboring countries already do. How Texas develops passenger rail going forward is a decision for the future Texas government; the cross-border mechanics are a solved problem.

Access and continuity are protected the way trade always protects them

Keeping the rails open across the border is exactly the kind of thing a separation agreement secures, alongside highways, ports, and air routes. Both Texas and the United States have every economic reason to guarantee continued rail access, because cutting it would hurt shippers and consumers on both sides. The realistic outcome is continuity: the same trains, the same tracks, the same crossings, with the paperwork at the border handled the way the railroads already handle it with Mexico and Canada today.

The bottom line

Freight rail keeps running on privately owned track whose owners already cross borders for a living, and passenger rail continues through the same cross-border cooperation that moves passenger trains between countries everywhere. Independence does not pull up a rail or stop a train. It adds a border crossing to a network that is already full of them.