Immigration security

Undocumented America: The Truth of Illegal Immigration

Roughly 11 million people currently live in the United States illegally, according to the Pew Research Center. Between 33 and 50 percent do so by overstaying their visas. However, both the number of apprehensions and the total number of undocumented migrants in the United States have fallen significantly since 2014, according to the U.S. Customs and Border Protection.

The reason for this drop-off can be attributed to the state of the American economy, Raúl Hinojosa-Ojeda, director of the North American integration and development center, and professor at UCLA, told FOXBusiness.com.

"I mean, you can literally set your clock to this," said Ojeda. "As the unemployment rate declines, that’s exactly when you start seeing the kids coming back to the border. Why? Because their parents now have a job and more money."