Gerald Posner is absolutely right. There is enough blame to go around.

Clarke knows better than to blame any one administration. And so do most of the partisans now pointing fingers at each other.

No one party or administration is to blame for 9/11. They all are. There was a systematic failure to recognize the early threat posed by Islamic fundamentalism, and a thorough unwillingness to aggressively confront that threat once it was identified. If the 9/11 commission does its work correctly, both parties will have to hang their heads in shame before the electorate this November.

So the question then is is why did Clarke just focus on Bush and say Clinton did so much more?