Home US President Barack Obama shakes hands with former New York City Mayor Michael Bloomberg during the US – Africa Business Forum on the sidelines of the US – Africa Leaders Summit in Washington, DC, August 5, 2014. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP via Getty Images) US President Barack Obama shakes hands with former New York City Mayor Michael Bloomberg during the US - Africa Business Forum on the sidelines of the US - Africa Leaders Summit in Washington, DC, August 5, 2014. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP via Getty Images)

US President Barack Obama shakes hands with former New York City Mayor Michael Bloomberg during the US – Africa Business Forum on the sidelines of the US – Africa Leaders Summit in Washington, DC, August 5, 2014. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP via Getty Images)

US President Barack Obama shakes hands with former New York City Mayor Michael Bloomberg during the US – Africa Business Forum on the sidelines of the US – Africa Leaders Summit in Washington, DC, August 5, 2014. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP via Getty Images)

Singer and actress Beyonce and Mayor Michael Bloomberg attend the unveiling of the Beyonce Cosmetology Center on March 5, 2010 in New York City. (Photo by George Napolitano/FilmMagic)