There is much to suspect as to why the government did not act to stop the muslim jihadists who assembled at the Al Farook Mosque in Brooklyn. It is there that Nasir was inspired to kill our teacher and leader by the Blind Sheik. It was the Al Farooq Mosque which had connections with Bin Laden and they were actively planning an attack on the World Trade Center which was carried out in 1993. There is a very big intelligence failure which must be examined and I have never found a satisfactory reason that the evidence from the Rabbi Kahane murder was not examined to reveal the plot to destroy the WTC.
What is especially disturbing is that Nasir was not found guilty of the murder, rather only a weapons charge. I have never quite heard a satisfactory explanation why such a finding could happen considering the evidence and witnesses.
This video (which I have posted many times before) explores this conspiracy theory.
I do not believe our agencies knowingly allowed 9/11 to happen. But I do believe that there was a monumental failure of the intelligence services to investigate the muslim threat.