By the end of the Democratic presidential debate on Thursday night, it was impossible to avoid the question: Was Wesley Clark trying to hurt himself? Or had the retired four-star general simply not considered the possibility that debate moderators would ask him, like, questions? Consider Clark's response to a query about the lobbying work he did in 2002 and 2003 for an Arkansas-based company called Acxiom. The software firm has developed a product called CAPPS II, which is an airline screening system that gathers information on passengers and color-codes them according to their potential terrorist risk (the name stands for...