WASHINGTON — The top U.S. commander in Afghanistan is ordering an investigation into charges that an army unit trained in psychological operations was improperly told to manipulate American senators to get more money and troops for the war. A senator allegedly targeted said today that he's confident there will be a review of the facts, but played down the idea that he was manipulated. The staff of Lt. Gen. William Caldwell, head of the effort to train Afghan security forces, ordered the information operations unit to compile profiles, voting records and other information on visiting lawmakers to leverage in a...