The security has done more to keep people from going back to Mexico than it has to keep them from coming in.

It's been very hard to find any effect from border security.

Especially if we look at the Mexicans, these are people with fairly low levels of formal education. They're not able to get licensing or credentials in the United States because of their status, so the kinds of jobs available to them in the United States are somewhat limited.

This is only people physically coming in, arrivals into the country for the first time.

Texas is a special case. The number of both legal and illegal immigrants has grown faster in Texas than in other major states.

We've seen a fairly steady growth in the number of undocumented immigrants living here, and this data shows very sizable numbers coming in.