I figured his spokesmen would keep hammering the Birther thing, but a full-blown ad replete with cameo by Orly Taitz? Quoth Ron Burgundy: “Boy, that escalated quickly. I mean, that really got out of hand fast.” My feelings about Birtherism are well known and, needless to say, this is an efficient way of marginalizing Hayworth with undecided centrists who might otherwise be weary of decades of maverickiness. (Geraghty was moved this morning to note Hayworth’s willingness to make chitchat with the John Birch Society.) But I hope McCain’s prepared to explain why he’s ready to go bareknuckle on Hayworth by...