Homeland Security Secretary Janet Napolitano speaks on the department's enforcement of immigration laws on Wednesday, Oct. 5, 2011, at American University in Washington. (AP Photo/Jacquelyn Martin)

Photo by: Jacquelyn Martin

Homeland Security Secretary Janet Napolitano speaks on the department's enforcement of immigration laws on Wednesday, Oct. 5, 2011, at American University in Washington. (AP Photo/Jacquelyn Martin)