Yet, the problem of the rich getting richer largely solved itself in a few days in early autumn of 2008. I suspect that hedge fund managers won't be a bottomless source of taxable income in 2009, and for a number of years to come.
So, Obama will eventually realize that he'll have to squeeze the upper middle class: families making from, say, $90,000 to $250,000. He'll have to raise income tax marginal rates on this broad expanse.
But a lot of Obama voters fall in this range. Moreover, in the Blue States, $90,000 to $250,000 isn't necessarily a huge amount of money. A family of four making $150,000 in Tulsa is probably living well, while one in Manhattan is not.
So, I predict that eventually, Obama will be tempted to try to adjust the tax code for the local cost of living: impose higher tax rates on the Oklahoma family making $150k than on the New York family making the same income.