Walker — with his hardcore on-message approach — does not respond to the usual efforts to entice Republicans to make damaging remarks about sex, race, religion, and other things that aren’t part of his message. Another strategy is needed, and Milbank seems to think he’s found it. (I put “seems to” in that sentence in honor of Walker’s dogged refusal to make statements about what’s inside another person’s head.) Milbank’s idea is to make Walker’s restraint into a horrible flaw that disqualifies him from serious consideration.