New Mexico has a huge drunk driving problem. A little over a week ago, four teenagers were killed. A few years ago, five members of the same family. Before that, it was a mother and her three small children. It never seems to stop. I have no idea why New Mexicans do this in numbers so much greater than Americans at large, but they do. My NMI column this week discusses what we should — and shouldn’t — do about this terrible problem.