Politico is reporting that the Ted Cruz campaign has sent a letter, through its counsel, to South Carolina television stations that are running attack ads funded by an anti-Cruz Super PAC. The basic gist of the Cruz campaign's letter is that the ads are false, and that the stations face potential legal liability for running them: "The ad falsely claims 'Cruz proposed mass legalization of illegal immigrants.' Ted Cruz has never introduced, outlined, or supported any policy that would give legal status to illegal immigrants," wrote Eric Brown, general counsel to the campaign, in the letter shared with the media....