What's Good for the Goose

So -- can I get this straight? When John Kerry ran in 2004 and placed Vietnam as a central theme in his record, Republicans went after him for doing so, arguing essentially that that biography was either not relevant or somehow was an attempt to avoid discussing the issues. So now here we have John McCain, whose entire premise is that he is on a biography tour. Where is that same criticism? Os is it a matter of Republicans only embracing biography when their side's biographical records are under discussion?