President Obama shakes hands with with Afghan President Hamid Karzai during their meeting at the NATO Summit in Chicago on Sunday. The summit, which continues Monday, is focusing heavily on Afghanistan's future. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

President Barack Obama talks about extending payroll tax cuts on Monday in the White House briefing room. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP