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WASHINGTON - JANUARY 20: US President Barack Obama dances with his wife and First Lady Michelle Obama as Beyonce sings 'At Last' during the first Inaugural Ball on January 20, 2009 in Washington, DC. Obama was sworn in as the 44th President of the United States today, becoming the first African-American to be elected President of the US. (Photo by Win McNamee/Getty Images)

WASHINGTON - JANUARY 20:  US President Barack Obama dances with his wife and First Lady Michelle Obama as Beyonce sings 'At Last' during the first Inaugural Ball on January 20, 2009 in Washington, DC. Obama was sworn in as the 44th President of the United States today, becoming the first African-American to be elected President of the US.  (Photo by Win McNamee/Getty Images)