The confusion here stems from whether the so-called “pocket veto” would apply in this case or not. There’s a thread around here somewhere with the relevant details. If Congress is adjourned, and the president doesn’t sign within 10 days, the bill is dead. If Congress is in session, and the president doesn’t sign within 10 days, the bill becomes law. The question: Is Congress adjourned right now, or on recess until the lame duck session.
This is a pointless distinction, since Bush will sign anyway.