And under whose watch did this occur?
“And under whose watch did this occur?”
According to this,
http://www.fairus.org/issue/identity-and-immigration-status-of-9-11-terrorists
most of the attackers seem to have made their initial forays into the US during the Clinton years, with some leaving and coming back during 2001, and with flight training occurring in January 2001 (the month of Bush’s inauguration). Some came in early spring/summer of 2001, when Bush would have been in office for 5 - 6 months.