US President Barack Obama (2nd R), first lady Michelle Obama (R) and their daughters Malia (2nd L) and Sasha (3rd L) participate in a song, also including singer Darius Rucker (L), at the end of the taping of the 'Christmas in Washington' television special to benefit Children's National Medical Center in Washington. (Reuters)
US President Barack Obama greets actor Dwayne "The Rock" Johnson. (Reuters)
President Barack Obama and first lady Michelle Obama greet singers Aloe Blacc and Darius Rucker. (Reuters)
(Reuters)
(Reuters)
(Reuters)
(Reuters)
(Reuters)
(Reuters)
(Reuters)