The Mexican government is exploring buying its corn elsewhere — including Argentina or Brazil — as well as increasing domestic production. In a fit of political pique, a Mexican senator even submitted a bill to eliminate corn purchases from the United States within three years.
American corn shipments to Mexico totaled nearly $2.6 billion last year and are part of an elaborate agricultural trade relationship between the two nations that has helped to interlace their economies. But though the corn business is a tiny fraction of the overall $525 billion in annual trade between the two countries, it has gained outsize importance and become something of a symbol for the nations’ economic codependence.
The prospect that the United States could lose its largest foreign market for corn and other key products has shaken farming communities throughout the American Midwest, where corn production is a vital part of the economy. The threat is particularly unsettling for many residents of the Corn Belt because much of the region voted overwhelmingly for Mr. Trump in the presidential election.