Assuming you mean in 2001.
Public support for the Wars in Afghanistan wanes earlier than OTL, given America has already achieved 'revenge' and public perception is al-Qaeda is weakened significantly without it's leader (true or untrue) It becomes loss plausible to achieve approval for war in Iraq, and either the issue dies in Congress, it's voted against, or we go anyway somehow. The eventual 2004 Election ITTL becomes much more balanced between domestic and foreign policy, but likely contains similar Democratic candidates. Bush is much more vulnerable and possibly is challenged for the nomination.