Cameron, de visita oficial en la Casa Blanca
U.S. President Barack Obama and British Prime Minister David Cameron talk during their Oval Office meeting at the White House in Washington March, 14, 2012. REUTERS/Doug Mills/Pool (UNITED STATES - Tags: POLITICS)
U.S. President Barack Obama and British Prime Minister David Cameron each eat a hot dog at a first round "First Four" game of the NCAA Division I Men's Basketball Tournament between Mississippi Valley State and Western Kentucky at the University of Dayton Arena in Ohio, March 13, 2012. REUTERS/Larry Downing (UNITED STATES)
U.S. President Barack Obama and British Prime Minister David Cameron attend the NCAA men's college basketball tournament game between Mississippi Valley State and Western Kentucky in Dayton, Ohio, March 13, 2012. REUTERS/Matt Sullivan (UNITED STATES - Tags: POLITICS SPORT BASKETBALL)