Over the last three days, ABC's World News devoted almost six times as much coverage to Senator Jim Bunning and his temporary hold-up of an unemployment bill as the program did for the ongoing revelations that Democratic Charlie Rangel violated House ethics with his trips to the Caribbean. World News investigated and followed the Republican for four minutes and 38 seconds over two days. In comparison, the program could only manage a scant 48 seconds of coverage for Rangel. (Anchor Diane Sawyer on Wednesday finally asked George Stephanopoulos about the news that Rangel was stepping down from his powerful Ways...