A few individuals have admitted that they were lazy and dishonest, choosing to forge signatures rather than pound the pavement and get legitimate ones. While this is a serious crime that should be punished, it does not reflect even a tiny bit on Obama or Clinton.
Don't get me wrong. I'm not saying Obana and Clinton aren't shady. I think all big-time politicians are shady, and they are no exception. I just don't think this story is evidence of that fact.
It is also important to remember that excluding Obama from the primary would have made no difference. He had more than enough delegates to get the Democratic presidential nomination, with or without Indiana. Thus, he would have appeared on the general-election ballot in any event.