President Barack Obama, first Lady Michelle Obama, former President George W. Bush and former first lady Laura Bush pause for a moment of reflection with family members of victims at the North Pool of the 9/11 Memorial. (Jefferson Siegel, Getty Images)

Michelle ObamaGeorge W. BushLaura BushBarack ObamaSeptember 11, 2001 AttacksNational September 11 Memorial & Museum
President Barack Obama, first Lady Michelle Obama, former President George W. Bush and former first lady Laura Bush pause for a moment of reflection with family members of victims at the North Pool of the 9/11 Memorial. (Jefferson Siegel, Getty Images)
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