By NEDRA PICKLER, Associated Press Writer Nedra Pickler, Associated Press Writer – 2 mins ago WASHINGTON – A federal appeals court has ruled that a Marine cannot sue Pennsylvania Rep. John Murtha for defamation. Staff Sgt. Frank Wuterich of Meriden, Conn., claimed Murtha damaged his reputation by saying he and his comrades killed women and children "in cold blood" in Haditha, Iraq, in November 2005. Murtha argued he has immunity from the lawsuit because he was acting in his official role as a lawmaker...