IS THE ESTABLISHMENT MEDIA BIASEDagainst conservatives? Dan Rather remains in the anchor chair at the CBS Evening News despite his involvement in recent news stories based on dishonest reporting, fabricated documents and even Internet gossip falsely alleging that President George W. Bush secretly intends to begin the military conscription of students. These stories were obviously designed to damage Mr. Bush in the final weeks before a national election. And now ABC News has left in place its Political Director Mark Halperin. ABC has done this despite the network’s acknowledgement that Halperin wrote a memo that to many seems to direct...