Is the Immigration Problem All in Our Heads?

When a rancher was allegedly killed by an illegal immigrant, the incident helped spark Arizona's tough new crackdown on undocumented workers. After President Obama met with Governor Jan Brewer, the White House said 1200 more National Guard troops would be deployed on the border. Rising crime requires more enforcement. But in Arizona, violent crime is declining and so is illegal immigration, according to Randal Archibold in the New York Times.