President Obama acknowledges the crowd
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Obama gets belated birthday message

6 August 2013 Last updated at 23:51 BST

President Barack Obama was interrupted during a speech on the US housing market recovery by the audience at Desert Vista High School in Arizona, wishing him a belated happy birthday.

Mr Obama, who turned 52 on Sunday, smiled and joked with the audience, saying wife Michelle told him he does not look "a day over 51."