In the wake of CBS News' "60 Minutes" controversy, an influential Republican on Tuesday said he wants to convene a Capitol Hill hearing on TV news operations after the Nov. 2 election. Rep. Joe Barton (news, bio, voting record) (R-Texas), chair of the House Commerce Committee, told a meeting of the TV engineering trade group MSTV in Washington that broadcast network news divisions "need to have safeguards to prevent reporters from infusing their opinions into news reports." The lawmaker said he wanted to hear from execs of all the nets -- not just CBS -- and threatened to introduce legislation...