That's a bad source to use while backing your point. Because if you read what the article says...
The president was warned on August 2001 of hijacking. Hijacking doesn't necessarily translate to turning airplanes into missiles and crashing them into the WTC. And this:
"There has been longstanding speculation, shared with the president, about the potential of hijackings in the traditional sense," the White House press secretary, Ari Fleischer, said yesterday. "We had general threats involving Osama bin Laden around the world and including in the United States." He said the administration, acting on the information received in early August, notified the "appropriate agencies" that hijackings "in the traditional sense" were possible. The warning was never made public, he said.
does not translate into Bush receiving multiple warnings about an attack that would demolish two towers, kill thousands of civilians, and punch a hole in our pentagon.
But now, according to that article written may 16th 2002, they are saying that the FBI had been notified by one of their own agents that a group of arabs were seeking piloting and all sorts of airplane/airport training from a particular flight school. Apparently this information also mentioned something about Osama Bin Laden. The FBI did not act on the memo, the article says.
Now some key points here:
Mr Fleischer would not discuss when or how the information was given to Mr Bush. But a senior administration official, speaking on condition of anonymity, said the president was made aware of the potential for hijackings of US planes during one or more routine intelligence briefings last summer.
The CIA would not confirm what it told Mr Bush, but the agency said the issue of Bin Laden's attempting a hijacking was among a number of terrorist methods raised to US government officials at the time.
But there was no information that suggested hijackers would crash planes into American landmarks and there was no mention of a date, a CIA official said.
Mr Fleischer said the government, acting on the information, had "notified the appropriate agencies".
So yes Bush was warned about just hijackings, but at that time no one not even you, I, or anyone or even the supposed Gore Administration would assume that such hijackings would be deadly and have an impact on our course of history. But one may say why couldn't we just take care of all of these tips in which some may claim the numbers to be in the thousands. Sounds a lot like the Patriot Act.
Sure maybe under a different administration a different approach to investigation may be used but again that does not guarantee a prevention of 9/11. In fact maybe the littlest detail or change in methods may prove to be more detrimental than beneficial. But again, who knows?
And so apparently the Hijackers, knowing that the security at that time would often overlook knives or sharp edges, brought in box cutters and plastic knives to secure their respective planes.
And finally the article ends with this:
A spokesman for Democratic senator Bob Graham, the chairman of the Senate intelligence committee, said yesterday that the revelations in the memos marked an important discovery in Congress's investigation into why the FBI, CIA and other US agencies failed to learn of and prevent the September 11 plot.
"It represents a failure to connect the dots," said Mr Graham's spokesman, Paul Anderson. "This was dismissed rather lightly at FBI headquarters."
The FBI also has faced tough questioning about whether it failed to act aggressively enough after arresting Zacarias Moussaoui, the suspected "20th hijacker", in August after he raised concerns by seeking flight training at a Minnesota flight school.
The FBI director, Robert Mueller, has repeatedly said that he wished the FBI had acted more aggressively in addressing the Arizona and Minnesota leads. But he insists that nothing the FBI possessed before September 11 pointed to the plot.
So from this article alone (remember this was written in 2002 before we truly got into all this mess) the articles says that Bush was warned of a hijacking, but due to the failure of the CIA, FBI, and other US agencies, nobody was able to prevent the 9/11 terrorist attacks.
Now I'm pretty sure other sources out there may say something different, but from the one used here, it emphasizes the blame on things other than Bush
None.