The composition of the population hasn't changed much in the last 25 years.

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

Once they come in, they are actually reluctant to leave.

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

The boom in the U.S. economy at the end of 1990s increased flow by 35 percent, but that peak was rather short-lived.

The border patrol is actually helping to keep people in the United States, rather than out.

There's about 6.5 million adults who are in families, either couples or couples with children, and there's another 2 million children. The vast majority of this population is families.

This population is a bunch of families, not a bunch of single guys.

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

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