You aren't insinuating bungling in isolation though. As you admit, you are insinuating a massive conspiracy. You shift the goal posts in a single paragraph - (You say that they insinuate a conspiracy and then ask if I agree with Chomsky - 2 very different things). Like I said in my previous post, I wouldn't be surprised if the US government bungled in its failure to prevent the events of 9/11, nor in their attempts to minimise their appearance of ineptitude after the fact (also Chomsky's position). You are pointing out 'evidence' of a conspiracy. I just don't see it.
No, I don't support an investigation, because I haven't seen one shred of hard evidence to justify the massive expense of such a thing. You have pointed out hearsay, innuendo, coincidence and circumstantial evidence, but not one shred of incriminating evidence. In the absence of such evidence, how do you justify such a stance - I know you value such things.