US President Barack Obama greets wellwishers upon arrival at McCarran International Airport in Las Vegas on October 23 2016 to attend a campaign...
{"Image ImageDescription": "US President Barack Obama greets wellwishers upon arrival at McCarran International Airport in Las Vegas on October 23, 2016 to attend a campaign event for Democratic presidential candidate Hillary Clinton. / AFP / NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP via Getty Images)"}