Homeland Security Secretary Janet Napolitano watches as President Barack Obama signs the Southwest Border Security Bill, Friday, Aug. 13, 2010, in the Oval Office of the White House in Washington. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

Homeland Security Secretary Janet Napolitano watches as President Barack Obama signs the Southwest Border Security Bill, Friday, Aug. 13, 2010, in the Oval Office of the White House in Washington. (AP Photo/Carolyn Kaster)