I don't recall a single time that President Bush has actually said 9/11 was caused by the former administration...others have...but Bush has never enunciated it directly. But the facts speak for themselves: 9/11 was not the result of a jiffy plan; it took years to plan, and those years were during the previous 8..
As I said before he hasn't and he shouldn't have to. Others should be making that case. And contrary to your statement I don't recall any of our guys pointing the finger at Clinton to any extent.