Harm is not the only basis for enacting a law and punishing violators. Deterrence and retribution are also bases for invoking the power of the state. The DUI laws are clearly based on a deterrence philosophy which has given every appearance of working.
Who knew that Alan's posts on wine would lead us inevitably down the path to drunk driving laws?!!!
Speaking of Alan, I was interested to hear he appeared on Larry Kudlow's show recently. We're running a very humble blog here. Most bloggers bend over backwards to let you know where they've appeared and where they're going. I've got the opposite problem with the old school policy wonks on this site!