Los voluntarios llegan al jardín sur de la Casa Blanca el 4 de julio de 2013 en Washington. El país entero celebra el 237
aniversario de la independencia de los Estados Unidos.
People stand in the middle of 44th St at Times Square to watch Independence Day fireworks in New York, July 4, 2013. REUTERS/Carlo Allegri (UNITED STATES - Tags: SOCIETY ANNIVERSARY)
U.S. President Barack Obama and First lady Michelle Obama walk down the stairs during Independence Day celebrations on the South Lawn of the White House in Washington July 4, 2013. REUTERS/Joshua Roberts (UNITED STATES - Tags: POLITICS)