Commenter Owlbear1 argues this morning on Sadly No that, rather than reviving the Fairness Doctrine, perhaps we could introduce (and enforce) this simple rule:
News must be clearly separated from commentary. Song or Jingle to announce the News. Announcer who is not one of commenters, announcing that he is reading the News. The News. Announcer telling you that was the News and now back to commentary.
That little bugger right there would solve tons of issues.