Newt Gingrich is demanding an apology from NBC News after it aired a report citing complaints from unnamed former advisers blaming his wife, Callista, for many of the problems that led to his campaign's staff shake-up last week. "I believe NBC owes Callista an apology, because the fact is my campaign is my campaign," Gingrich said in an interview with Fox News's Greta Van Susteren. "Yes, we make decisions as a couple, but in the end, I take full responsibility. And I think the program this morning was totally irresponsible, and personally reprehensible, and the kind of thing that makes...