It was  "based on the 9/11 commission report." Are you saying that document is a farce?

It was based in part upon excerpts of the 9/11 report.  In addition, according to ABC, it was "...drawn from a variety of sources including the 9/11 commission report and other published materials and from personal interviews."

So to me, the farce doesn't appear until we get to the "other published materials and personal interviews" part, since those don't have to be vetted....and we know what a farce Conservatives can create when trying to defend themselves.