One of the most respected and enigmatic senators in Washington is John McCain. A Republican, McCain nevertheless has many Democratic supporters and liberal columnist Maureen Dowd recently suggested that the Democratic ticket would be stronger with McCain in the Number 1 spot and Kerry at Number 2. Surely a public favorite, Senator McCain blends common sense with an absolute moral dedication to do what he thinks is right. What makes him puzzling to others in Congress, of course, is that McCain acts on his morals, politics be damned. McCain's colleagues might have moral twinges about issues, but rarely let questions...