Via CNN:

Let me be as clear as possible," Obama said. "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 Gov. Palin's performance as governor or her potential performance as a vice president."

Obama said reporters should "back off these kinds of stories" and noted that he was born to an 18-year-old mother.

"How a 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's off-limits."

Good for Obama. I can't help but wonder how many of his trolls will trash the Palin family anyway, even after their leader has made it clear that they are out of bounds.