Health-care propagandists like Harry and Louise have become ubiquitous on TV lately, but not all the messages are getting through. In the Washington area, four network affiliates sparked a free-speech controversy by turning down a 2- min. ad, produced by a pro-Clinton group, which attacks the Pizza Hut company for failing to provide health coverage for all its workers. Pizza Hut, owned by TV advertising giant Pepsico, has been a foe of the Clinton plan's employer mandate.
After Pizza Hut heard about the ad, its lawyers threatened the producers and affiliates with legal action on the grounds that the commercials conveyed...