Getting a bit goofy again...
<...And how long did President Clinton sit listening to pet goat stories while the nation was under attack?
If you are referring to Bush's presence in a schoolroom until he was informed of the attacks, I fail to see how he could have acted on it before he was told it happened. He left the second the information reached him.
Oh, that's right. In your world, Bush knew it was going to happen ahead of time, and even SET IT UP! <Sam Kinnison Mode>IN FACT, BUSH IS THE ANTICHRIST! ONE OF THE GIANT ALIEN LIZARDS! AAAHHHHH! AAAHHHHHHHH!</Sam Kinnison Mode>