"I think he's a guy who's willing to get down into the weeds. Because he immerses himself in that and understands it so well -- the positions he adopts may not always be the ones that everyone else in our conference comes to."
-- Sen. John Thune (R-SD), quoted by Politico, explaining that Sen. Bob Corker (R-TN) sometimes break ranks with his GOP colleagues because he actually thinks about policy.