Remember the attack on Langley in 1992? Where a lone Pakistan student shoot two officers clerks in the check-in line outside CIA HQ?
This guy was directly linked to the Pakistani Intelligens ISI!
I cannot find any info or news report on any 1992 CIA HQ shooting. There was a shooting, causing death of 2 CIA employers in
1993. The shooter was a Pakistani working in a courier company, later executed by US. Furthermore, I cannot find any info or news report on this alleged connections between the shooter and the ISI, apart from the fact that FBI agents worked together with ISI agents in the arrest of the shooter.
As for the Clinton and 9/11, better relationships with Pakistan and ISI
MAY have lead to better intel sharing and less support to Islamist fundamental groups, including Taliban, but "cultivation" of Islamist groups are a oft-used techniques by the ISI to counter India and other regional powers. ISI has practiced this for many years before 9/11, esp. in Kashmir. Improved relations with US doesn't automatically translated into cessation of Pakistani support for these groups, because they are an important part of Pakistani security apparatus.
Furthermore, decreased or removal of Pakistani to Taliban doesn't automatically translated into no 9/11 and support for AQ either. ISI doesn't control Taliban and Taliban certainly doesn't control AQ. All these groups have their own hidden agenda and contradicting interests. Taliban and AQ may have been weakened if Pakistani aid is lessened or removed, but these groups will not disappeared at once.
Copied from wiki:
http://en.wikipedia.org/wiki/Inter-Services_Intelligence#Afghanistan
The Taliban regime that the ISI supported after 1994 to suppress warlord fighting and in hopes of bringing stability to Afghanistan proved
too rigid in its Islamic interpretations and too fond of the
Al-Qaeda based on its soil. Despite receiving large sums of aid from Pakistan, the Taliban leader
Mullah Omar is reported to have insulted a visiting delegation of Saudi Prince Sultan and an ISI general asking that the Taliban turn over bin Laden to Saudi Arabia.
[9] Following the 9/11 attack on the United States by Al-Qaeda, Pakistan felt it necessary to cooperate with the US and the
Northern Alliance