US President Barack Obama and Democratic Presidential nominee Hillary Clinton embrace on the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. (Photo by Joe Raedle/Getty Images)
US President Barack Obama and Democratic Presidential nominee Hillary Clinton embrace on the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. (Photo by Joe Raedle/Getty Images)