Major U.S. railroads, including Union Pacific and BNSF, have suspended grain shipments to Mexico due to increased demand and resulting capacity issues, leading to significant train backlogs. Union Pacific halted grain shipment permits citing delays from Ferromex, which has implemented numerous congestion-related embargoes this year. Approximately two-thirds of U.S. grain exports to Mexico travel by rail, and disruptions threaten trade competitiveness, particularly as farmers enter the fall harvest. The situation has raised concerns among agricultural groups about the impact on U.S. exports and competition with other countries.

Source: https://www.supplychaindive.com/news/grain-trade-disrupted-rail-mexico-bnsf-union-pacific/727781/