Obama admits to being born in Kenya on these two videos:
https://www.youtube.com/watch?v=Se5zvGF6u9g
https://www.youtube.com/watch?v=edyJ4oS8kz0
The first one he is joking. The second is a cut and paste to make it sound like he's saying that stuff.
I'll keep looking for the real one and pass it on if I find it. I think it was when he was running for Senate.