re: How involved was our own federal government with 9-11?

It's very simple really. Every fighter jet on the Eastern seaboard was moved out of the region for "training" at the time of the attack. Typically they're able to intercept a hijacked plane anywhere in the US within 7 minutes. Yet, on that day we all watched it play out for over an hour without any military intercept whatsoever. And building 7 collapsing despite not being hit by a plane puts this squarely into the #1 category.

To argue otherwise is foolish.