Maria Isabel de la Paz, a U.S. citizen, was twice turned away when trying to enter the U.S. legally. When she attempted an illegal crossing, her case was decided by a Border Patrol agent, not an immigration judge. John Burnett/NPR hide caption

itoggle caption John Burnett/NPR

Immigrants board a bus after being released from U.S. Border Patrol detention in Texas last month. An immigration judge says the Obama administration's "fast-tracking" effort means many people go into court without an attorney, opening a door to future problems. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

Philadelphia City Councilwoman Maria Quinones-Sanchez pushed for the city to change its practice of detaining immigrants on behalf of federal officials. Matt Rourke/AP hide caption

itoggle caption Matt Rourke/AP