In the two weeks since my post on the Birther bill’s gaining new champions in the House, this ridiculous movement has gained even more cheerleaders. News stories now regularly allude to the issue and cable TV, unable to pass up on the opportunity to invite Allen Keyes or to score links from Drudge and Huffington, is discussing it at length. At least one media personality has been converted: Lou Dobbs, the immigration-obsessed CNN host. Yesterday, he insisted that Obama had not produced a b