The Commission had a pre-determined outcome already decided and naturally didn't want anything to interfere with that.
Did you hear what Peter Lance has to say about the Commission? It's here:
http://www.readersread.com/features/peterlance.htm
I had never heard this. Thanks for the link. I bookmarked to read in it's entirey later. Looks quite interesting.
Just a quick snippet from Peter Lance, author and reporter, on the 9/11 Commission:
As soon as I heard Snell’s name I suspected that what my source had been telling me was true: that the Commission staff was limiting the scope of the investigation and cherry picking evidence.
Snell had been the Assistant U.S. attorney who co-prosecuted Ramzi Yousef for the “Bojinka” case in 1996. In my first book 1000 Years For Revenge I recounted how the Justice Department, during Snell’s tenure, had limited the scope of the Bojinka case.