That Bush shouldn't have known about CAIR requires a suspension of belief because six days before 9/11, on September 5th, Federal Authorities raided an office belonging to the Holy Land Foundation and found evidence that implicated CAIR. How did the message that CAIR had these ties with Hamas not reach the president? HLF had been under investigation for five years at the time.
Via Discover the Networks:
Suspicious of its terrorist ties, U.S. federal authorities began monitoring the Holy Land Foundation in 1996. On September 5, 2001, federal anti-terrorism agents raided InfoCom Corporation, the company that ran the HLF website. According to defectors from the conspiracy, the HLF web server was used also by the Council on American Islamic Relations (CAIR), the Islamic Society of North America, the Muslim Students’ Association of the U.S. and Canada, the Islamic Circle of North America, the Islamic Association for Palestine, and American Muslims for Jerusalem. As Islam scholar Stephen Schwartz writes, “All these organizations drew from the common financial and technical pool at HLF. All shared a single administrative and technical contact for the maintenance of the web server. They had been erected as political shells around the Hamas hydra-head represented by HLF.” (Support for Hamas had become illegal in 1995 as the result of an executive order by President Bill Clinton and subsequent congressional action.)In fact, a man named Suhail Khan may have had a hand in this speech taking place where and when it did. According to a report by Frank Gaffney, Khan is a Muslim who has infiltrated the conservative movement with the help of Grover Norquist. Moreover, Khan is also on the Board of the American Conservative Union (ACU), which runs CPAC. Khan worked in the Bush administration's Department of Transportation.
HERE is Gaffney's report on Khan.