dapdPeople walk along the beach at Kailua Bay not far from where first lady Michelle Obama and her daughters are staying in Kailua, Hawaii, Thursday Dec. 22, 2011. (Foto:Eric Risberg/AP/dapd)
REUTERSU.S. President Barack Obama waves from the Air Force One at Andrews Air Force Base near Washington December 23, 2011. Obama is traveling to Hawaii for the end-of-year holidays. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS TRANSPORT)
dapdA sign at Hickam Air Force Base welcomes President Barack Obama for his holiday vacation in Honolulu, Friday, Dec. 23, 2011. (Foto:Eric Risberg/AP/dapd)
REUTERSU.S. President Barack Obama (2nd L) arrives at Hickam Air Base near Honolulu, Hawaii, December 23, 2011. Obama and his family are spending the end-of-year holidays in Hawaii. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS)
REUTERSA woman takes a picture of U.S. President Barack Obama with her iPhone upon his arrival at Hickam Air Base near Honolulu, Hawaii, December 23, 2011. Obama and his family are spending the end-of-year holidays in Hawaii. REUTERS/Jason Reed (UNITE
dapdPresident Barack Obama and his dog Bo head for the motorcade after shopping at PetSmart, Wednesday, Dec. 21, 2011, in Alexandria, Va. (Foto:Carolyn Kaster/AP/dapd)
REUTERSU.S. President Barack Obama shops at Best Buy in Alexandria, Virginia December 21, 2011. Obama was in Alexandria doing some Christmas Shopping and stopped in a pizzeria for lunch. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS BUSINESS TPX
EPAepa03040652 US President Barack Obama buys a dog bone and treats for his dog Bo as he shops for Christmas gifts at a PetSmart store in Alexandria, Virginia, USA, on 21 December 2011. EPA/KEVIN DIETSCH / POOL
REUTERSU.S. President Barack Obama selects a bone for his dog Bo at a pet store in Alexandria, Virginia December 21, 2011. Obama was in Alexandria doing some Christmas shopping and stopped in a pizzeria for lunch. REUTERS/Kevin Lamarque (UNITED STATES -
REUTERSU.S. President Barack Obama buys the Wii game "Just Dance 3" at Best Buy in Alexandria, Virginia December 21, 2011. Obama was in Alexandria doing some Christmas shopping and stopped in a pizzeria for lunch. REUTERS/Kevin Lamarque (UNITED STATES -
REUTERSU.S. President Barack Obama carries pizzas out of a restaurant in Alexandria, Virginia December 21, 2011. Obama was in Alexandria to do some Christmas shopping. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS)
dapdPeople walk along the beach at Kailua Bay not far from where first lady Michelle Obama and her daughters are staying in Kailua, Hawaii, Thursday Dec. 22, 2011. (Foto:Eric Risberg/AP/dapd)