In a wildly applauded appearance, Barack Obama took the stage to ask the country to “do for Hillary Clinton what you did for me” "Tonight, I ask you to do for Hillary Clinton what you did for me. I ask you to carry her the same way you carried me. Because you're who I was talking about 12 years ago, when I talked about hope"  At the end of the speech, Clinton joined the President onstage,  her first appearance in person at the convention