There is simply no way that the McCain proposal can end up revenue-neutral for the government. The administration proposal and the Democratic proposal, as I understand them, are both similar enough to the Stockholm Plan that there's at least a chance of revenue neutrality, even profit in the long term. McCain's idea is simply utterly daft.
I can't believe we're letting this clearly barmy old geezer disrupt what were obviously productive negotiations. Thanks to his self-centered meddling, which is clearly intended as some sort of long-shot gamble to save his increasingly bizarre candidacy, instead of having a plan that had a good chance of passing both houses of Congress and getting a Presidential signature, we have nothing. I don't want to think about how far the market will drop tomorrow now.