From Metafilter:
GOP Warns TV Stations Not to Air Ad Alleging Bush Mislead the Nation Over Iraq They claim that the ad itself is dishonest, and cite the obligation of broadcast outlets to be free of misleading information. “Such obligations must be taken seriously. This letter puts you on notice that the information contained in the above-cited advertisement is false and misleading; therefore, you are obligated to refrain from airing this advertisement.” Despite the implicit threats, only one station has refused to run the ad, a Fox station.