It is massive, and I think very good. But my personal opinion is it has 2 fatal flaws:
1. Mortgage Deduction: That Lobby is just too powerful and it will not allow this to go through.
2. State Income Tax Dedcution: The Big states (the most heavily taxed are some of the biggest) are not going to kill their golden goose. WHile texas and Florida love it, NY and California dont.
Any other wagers on the outcome?