George Bush contradicted himself at the Press conference,
by saying no one could have predicted hijacked planes crashing into buildings, but in fact George had attended the Genoa G8 conference in July 2001 and was specifically warned about that very threat.
(I remember hearing on the news at the time that they were setting up antiaircraft defense systems)
can read it all at misleader.org

Bush Contradicts Self At His Own Press Conference


During last night's prime time press conference, President Bush once again claimed that "there was nobody in our government, at least, and I don't think the prior government that could envision flying airplanes into buildings"1. But just minutes later at the same press conference the president proved he was not telling the truth.

Specifically, Bush said the reason he supposedly requested intelligence briefings before 9/11 "had to do with the Genoa G-8 conference I was going to attend" in 2001. Bush was referring to the fact that, prior to that conference, he was warned that "Islamic terrorists might attempt to kill him and other leaders by crashing an airliner into the summit" meetings2.

His statement that "the prior government" had not taken precautions against terrorists using planes as weapons is also contradicted by the facts. The Wall Street Journal recently reported that under President Clinton, "the federal government had on several earlier occasions taken elaborate, secret measures to protect special events from just such an attack"3 after receiving intelligence warnings4.