Have a look at this good but very depressing post from Justin Taylor:
It was interesting that at the Saddleback Presidential Forum, Rick Warren asked a very good and specific question: “At what point does a baby get human rights, in your view?” He did not ask a theological question (e.g., when does the baby begin to have a soul?) or a scientific question (when does human life begin?), but a purely legal question (when do babies begin to have rights?).
Obama either misunderstood or misrepresented:
“Well, you know, I think that whether you’re looking at it from a theological perspective or a scientific perspective, answering that question with specificity, you know, is above my pay grade.”