A 670-mile-long shrine to American insecurity

Last February, I found myself in the difficult position of explaining American insecurity to a group of Mexican undergraduates at a college in Matamoros, Mexico, just south of the border at Brownsville, Texas. I was taking questions after delivering a lecture on the long-term prospects of Mexican immigrants being accepted into U.S. society. A neatly dressed young man in the back stood up to ask a pointed question. "How," he said politely in Spanish, "could such a rich and powerful country be so self-centered as to build a wall on its border to keep people out?"

For a moment, I figured I could give him a simple answer: A vocal constituency wants to keep border crossers out at all costs; they operate under the easy rubric of law enforcement and homeland security. But he was asking a deeper question than that.

First, I discussed the historical cycle of the U.S. embracing and then rejecting the outside world, how we can sometimes be both generous and selfish to newcomers. I outlined the ongoing strains of xenophobia and racism in U.S. society. I mentioned the profound ethnic demographic shift in the U.S. and asked him whether he thought Mexicans would be any less "self-centered" if faced with a similar situation. And then I got to the hard part: having to explain why citizens of arguably the richest and most powerful nation on Earth could feel so put upon by the world.

Last week, the Bush administration's Department of Homeland Security announced that it would use its waiver authority to bypass more than 30 laws and regulations to finish building 670 miles of fence along our southern border by the end of the year. And if all that goes according to plan, I won't be the only American having to explain what this new border wall says about us as a people and a country. For the last 120 years, Americans have been able to point to the Statue of Liberty as a symbol of our collective pride in our immigrant origins. But future generations are more likely to point to the wall on our southern border as an altogether different symbol.

The most vocal supporters of the border wall like to portray the United States as a hapless victim of illegal immigrants. They act as if these people show up out of nowhere, as if they are not part of a long-established pattern. There's little recognition that the U.S. is just as responsible for creating the flows northward as is our eternally mismanaged southern neighbor.