US President Barack Obama signs a woman’s T-shirt after speaking on immigration at the Chamizal National Memorial on May 10, 2011 in El Paso, Texas. Obama has recently revived his goal of achieving comprehensive immigration reform, opening a path to legalization for the estimated 11 million foreign nationals living in the country illegally, most of them Hispanics. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)