US President Barack Obama arrives to board Air Force One at the Andrews Air Force Base in Maryland on October 24, 2011 to leave for Las Vegas, Nevada, first leg of a three-day visit to West Coast. Obama said the vast majority of Americans would see a tax cut under the bill — a $447 billion proposal aimed at reviving economic growth and curbing 9.1 percent unemployment. The White House has touted the jobs bill as a shot-in-the-arm for the economy, and accused Republicans of playing politics by blocking it. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)