Nobody wants to hear this, but news that Special Prosecutor Robert Mueller is headed home without issuing new charges is a death-blow for the reputation of the American news media. As has long been rumored, the former FBI chief’s independent probe will result in multiple indictments and convictions, but no “presidency-wrecking” conspiracy charges, or anything that would meet the layman’s definition of “collusion” with Russia. With the caveat that even this news might somehow turn out to…