The usual truism is that many politicians make the mistake of not coming completely clean when allegations of wrongdoing surface. The cover-up, it is said, is often worse than the underlying crime or ethical violation. This has often been cited as the mistake made by people including Richard Nixon (Watergate break-in), Bill Clinton (Lewinsky, not to mention Filegate and Travelgate), and John Edwards (love child and cheating on his cancer-stricken wife). More recently, Anthony Weiner. There is a long list. But in some cases, the crime, or lapse in judgment, is definitely worse than the cover-up. That appears to be...