Fox News, delicate creatures that they are, wanted to sue Fox - more specifically the Simpsons.

The Fox News Network did back down on its threat, although it has told The Simpsons creators that in the future, cartoon series will not be allowed to include a 'news crawl' along the bottom of the screen, which might 'confuse the viewers'.

I assume next they will be suing people like the Capitol Steps, whose audience might think they are seeing a Fox News Broadcast during one of their song parodies. Link via Hit and Run.