As Al Franken just pointed out on Air America, in August, 2001, Bush was busy watching Barney chase "armadillas" when he received that PDB.
He was in repose. He was on sabbatical.
His dig against the Clinton 90's notwithstanding, Clinton did "shake the trees" and prevented the Millenium attack- he saved MY CITY from a terrorist attack.
When I lived in New York City on 9/11/01, Bush did NOTHING to prevent an attack on my city.
Thank you , President Clinton, for protecting me.