From NBC's Savannah Guthrie
In his media avail, Obama just responded to reporters' questions about the Bristol Palin story. Noting that his mother had him when she was 18 years old, Obama said families are "off limits" in campaigns. He was very impassioned.
"I have said before and I will repeat again, I think people's families are off limits, and people's children are especially off limits. This shouldn't be part of our politics, it has no relevance to governor Palin's performance as a governor or her potential performance as a vice president. And so I would strongly urge people to back off these kinds of stories," Obama said. "And so I would strongly urge people to back off these kinds of stories. You know, my mother had me when she was 18. And how family deals with issues and teenage children that shouldn't be the topic of our politics, and I hope that anybody who is supporting me understands that is off limits."
Regarding to the accusation from the McCain camp that rumors of Bristol Palin were being spread by liberal bloggers, some with connections to the Obama campaign, the Illinois senator replied: "I am offended by that statement.Tthere is no evidence at all that any of this involved us. I hope I am as clear as I can be. So in case I am not, let me repeat: We don't go after people's families; we don't get them involved in the politics. It is not appropriate and it is not relevant. Our people were not involved in any way in this and they will not be. And if I ever thought it was somebody in the campaign that was involved in something like that they would be fired."