So as the summer winds down, I'm sure we've all heard of the "Barack Obama's not a citizen unless you show us proof, which we will not believe because proof has already been shown" fringe of Americans affectionately called birthers — as opposed to deathers and tax partiers. Fringe extremism is totally the new bipartisan, didn't you hear? Well, this week some birthers have reached a new low. In some of the comments on the Web site Free Republic, some birthers came up with an ingenious new way to decide whether our already democratically-elected president is a citizen. Let's just...