From “Black Jack” Pershing’s pursuit of Pancho Villa deep into Chihuahua to fentanyl streaming into the United States, Washington forgets that the southern border has always been a battlefield.
In August, Mexican President Claudia Sheinbaum declared, “We will never allow the US army or any other institution of the US to set foot in Mexican territory.” Her words came after reports that President Trump had signed a directive authorizing the Department of War to conduct military operations against Latin American cartels designated as Foreign Terrorist Organizations, Sinaloa foremost among them.
In Washington the rubric was “hemispheric defense.” In Mexico City it was heard as the prelude to invasion. Both capitals spoke as if the prospect was novel. But it is not.
American forces have crossed the Rio Grande in uniform far more often than most Americans realize. The Mexican-American War of 1846 amputated half of Mexico’s territory. Then, there were the Las Cuevas War of 1875 and the “Bandit Wars,” a series of raids by Mexican outlaws into Texas from 1915–1919. Even the obscure Garza Revolution of the 1890s followed the same logic. When cross-border violence spilled north, the United States answered not with demarches but with dragoons. Mexico remembers. But Americans forget and then declare the next repetition “unprecedented.”
