Donald Trump asked that years ago. Trump said people who went to kindergarden as well as people throughout his (Trumps) life know him but Obama seems to not have a past. Documents from his early years on have been sealed, removed from view, so none of us will be able to see them. He probably referred to himself as Kenyan on some of his applications so that’s why he doesn’t want people to know about his past, but there are other ways to know about Obama’s past. See the Washington Post series about him. It’s not complete nor does it reveal the secret documents but there’s a load of info so click here to read it .