The GOP has claimed that they favor a revenue neutral reform of the tax code, eliminating deductions and other exclusions while lowering the marginal rate. This is what Obama is offering. That said, I understand why they wouldn't accept the proposal in its present form - it isn't revenue neutral for the first 2-3 years, and the excess goes toward spending which the GOP does not want.
That's why it's called a bargain. The opening proposal always favors the side making the proposal.
Washington DC has been working on comprehensive tax reform for more than a decade. Anybody, including Obama, who thinks they can blow in at the last minute with their own proposal is a fool. Too many, for too long, are invested in their own idea of what reform should look like.
See the bolded above: An agreement on which deductions/credits etc to eliminate is, IMO, be damn near impossible to reach. E.g., the Democrats have been busy giving highly profitable multinationals like GE 'green credits' and they want to raise taxes on oil companies. I don't see the Repubs going along with this. I.e., in theory everyone can agree to lower the rate and broaden the base, but the specifics of doing so is where the (huge) problem lies.
I have problems seeing how Congress can enact tax law that is revenue neutral yet increases taxes for the first 3 years. Since this would presumably be done over a ten year period as usual, clearly taxes must be lowered over the latter 7 yrs. This sounds a lot like the "if you raise spending/taxes now we promise to lower taxes later' that has burned the Repubs in the past. "Fool me once, shame on you ...etc.", I suspect the Repubs will be highly reluctant to take this position again.
And if corporate tax revenue is to be revenue neutral over ten years, the immediate increase in spending is, over that 10 yr period, additional deficit spending thus increasing our debt. Assuming tax revenue will decrease in years 4-10 the only (practical and sure) way to counter it and avoid increasing the debt is with spending cuts. Given baseline budgeting and COLA accelerators this is absurd. It's just more 'kick the can down the road' stuff.
Obama has 3 more yrs in office. So he gets extra money to blow for those 3 yrs and leaves the dirty work (reducing spending/forgoing the tax reduction/increasing the debt) up to whomever replaces him.
Fern