Sen. Marco Rubio, R-Fla., says talk of a bipartisan agreement among eight key senators working on immigration law is "premature." Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

A woman takes the oath of allegiance during a naturalization ceremony at the district office of the U.S. Citizenship and Immigration Services in Newark, N.J. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

President Obama holds a copy of "The New Economic Patriotism: A Plan for Jobs & Middle-Class Security," which outlines some of his agenda for a second term, during a rally in Richmond, Va., on Thursday. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Texas Gov. Rick Perry speaks at a campaign event at Clark Electric Co-op on Dec. 27 in Osceola, Iowa. Perry's stance on immigration has troubled some Iowa voters. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

President Obama makes an economic case for immigration reform at the Chamizal National Memorial on Tuesday in El Paso, Texas. Jewel Samad/Getty Images hide caption

itoggle caption Jewel Samad/Getty Images