For conservatives, Paul Ryan’s one possible weakness is that he’s not vociferously anti-union enough. After all, he supports the Davis-Bacon Act. He also voted for the auto bailout. But don’t let this fool anyone. There’s a particular kind of union Ryan likes: a corrupt building trades union that contributes to his campaign and threatens violence against dissenters. And even this he does because it helps the family business. How bad is this local with ties to Ryan–it was the only local union in Wisconsin to support Scott Walker.