Rail corridors between Mexico and the United States are no longer a technical conversation—they have become a contest for economic power. They are no longer competing only against trucking, but against time, trade uncertainty, and geopolitics. In that battle, rail has regained strategic value: it lowers costs, stabilizes supply chains, and connects industrial hubs with ports, customs, and logistics parks. At a time when the USMCA is under review and rules of origin are under