Who will eventually be blamed for 9/11?

A recent Rasmussen poll shows that 35% of democrats believe Bush knew about 9/11 ahead of time and was involved in the attacks. There are more and more professors and celebrities, like Rosie O'Donnell and Charlie Sheen, believing the US was involved or set up the entire attack. Do you think in 10-15 years so many people will believe this that school books will teach our children several different theories about what happened on 9/11 to not offend anyone? Is history in the process of being rewritten?