How Not to Build a “Great, Great Wall”

Prior to World War I, the border -- established in the late 1840s and early 1850s after the U.S. military invaded Mexico and took a significant part of that country’s territory -- was relatively unpoliced. As historian Mae Ngai has pointed out, before World War I the United States “had virtually open borders” in every sense of the term. The only exception: laws that explicitly excluded Chinese migrants. “You didn’t need a passport,” says Ngai. “You didn’t need a visa. There was no such thing as a green card. If you showed up at Ellis Island, walked without a limp, had money in your pocket, and passed a very simple [IQ] test in your own language, you were admitted.”

A similar openness existed at the border with Mexico. “There is no line to indicate the international boundary,” reported Motor Age, a magazine devoted to promoting automobile tourism, in 1909. The only indication that you had crossed into a new country, heading south, was the way a well-graded road turned into a “rambling cross-country trail, full of chuck-holes and dust.”

The next year, the State Department made plans to roll “great coils of barbed wire... in a straight line over the plain” across the open borderland range where Texans and Mexicans ran their cattle. The hope was to build “the finest barbed-wire boundary line in the history of the world.” Not, though, to keep out people, as the border wasn’t yet an obstacle for the Mexican migrant workers who traveled back and forth, daily or seasonally, to work in homes, factories, and fields in the United States. That barbed-wire barrier was meant to quarantine tick-infested longhorn cattle. Both Washington and Mexico City hoped that such a fence would help contain “Texas Fever,” a parasitic disease decimating herds of cattle on both sides of the border and leading to a rapid rise in the cost of beef.