US President Barack Obama waves alongside First Lady Michelle Obama (L) and daughters Sasha (2nd L) and Malia (R), as they walk from Marine One after arriving on the South Lawn of the White House in Washington, DC, on January 3, 2012. The First Family returns after a 10-day vacation in Hawaii. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)