A criminal defense attorney for a Marine under investigation in the Haditha killings says he will call a senior Democratic congressman as a trial witness, if his client is charged, to find out who told the lawmaker that U.S. troops are guilty of cold-blooded murder. Attorney Neal A. Puckett told The Washington Times that Gen. Michael Hagee, the Marine commandant, briefed Rep. John P. Murtha, Pennsylvania Democrat, on the Nov. 19 killings of 24 Iraqis in the town north of Baghdad. Mr. Murtha later told reporters that the Marines were guilty of killing the civilians in "cold blood." Mr. Murtha...