I agree, he should veto the bill.
Furthermore, he should address the nation to explain in no Press-filtered words exactly why the bill was unconstitional, therefore it had to be vetoed. Bush has proven he can address the nation and get his point across. By doing it so publically, he wouldn't have to worry about the message being filtered or distorted by the Press.
Having said that, I'll be surprised if he does it. In Washington, politics is more about gamesmanship than statesmanship.
