Actually, he was 4 years too late. As seen on PBS' Frontline back in 2008. From the PBS archives:
"But there’s nothing new about the clip or Obama’s role in the controversy at Harvard Law School. In 2008, as a part of our quadrennial election special The Choice 2008, FRONTLINE ran the same footage of the speech as a part of an exploration of Obama’s time at Harvard Law School, where he graduated in 1991. It’s been online at our site and on YouTube since then."