"The rail industry supports 1.5 million jobs, one-third of which depend directly on international trade. Bolstered by NAFTA, international trade accounted for $26.4 billion of freight train revenue and 511 million tons of rail traffic in 2014. North America’s energy markets are integrated and interdependent — trading crude oil, natural gas, and refined products between the U.S., Canada and Mexico."
https://www.washingtonexaminer.com/opinion/op-eds/a-trade-war-threatens-the-u-s-economy