Bush will have a difficult time using the veto when he's being investigated by the House in impeachment hearings. Oh yeah, they are going to try and impeach him. They probably won't have the votes but that's their agenda for the next two years. Tie him up.
The impeachment may or may not occur. First they have to take control of the House.
Just remember that there are probably many elected representatives in the House on the payroll of the terrorists or their sympathizers. They may be in hot water themselves, whether we know about it or not.