It seems the stress of the campaign is getting to him.
Mr. Obama noted that when Republican vice presidential nominee Gov. Sarah Palin "was forced" to talk about her pregnant 17-year-old daughter, he issued a forceful statement to reporters that the line of inquiry was "off limits." But he said the McCain campaign tried to tie him to "liberal blogs that support Obama" and are "attacking Governor Palin."
"Let's not play games," he said. "What I was suggesting -- you're absolutely right that John McCain has not talked about my Muslim faith. And you're absolutely right that that has not come."
Mr. Stephanopoulos interrupted with, "Christian faith."
"My Christian faith," Mr. Obama said quickly. "Well, what I'm saying is that he hasn't suggested that I'm a Muslim. And I think that his campaign's upper echelons have not, either. What I think is fair to say is that, coming out of the Republican camp, there have been efforts to suggest that perhaps I'm not who I say I am when it comes to my faith -- something which I find deeply offensive, and that has been going on for a pretty long time.
[H/T Indiana Hardball]