US Population Of Illegal Immigrants Decreased About 1 Million Since 2007: More Likely To Be Over 35 Years Old And Lived In The US Over 10 Years

From The Washington Post, "Fewer immigrants are entering the U.S. illegally, and that’s changed the border security debate" by Jerry Markon:

As the Department of Homeland Security continues to pour money into border security, evidence is emerging that illegal immigration flows have fallen to their lowest level in at least two decades. The nation’s population of illegal immigrants, which more than tripled, to 12.2 million, between 1990 and 2007, has dropped by about 1 million, according to demographers at the Pew Research Center.

A key — but largely overlooked — sign of these ebbing flows is the changing makeup of the undocumented population. Until recent years, illegal immigrants tended to be young men streaming across the Southern border in pursuit of work. But demographic data show that the typical illegal immigrant now is much more likely someone who is 35 or older and has lived in the United States for a decade or more.

Homeland security officials in the Obama and George W. Bush administrations — who have more than doubled the Border Patrol’s size and spent billions on drones, sensors and other technology at the border — say enhanced security is driving the new trends.