On Wall Street, 2010 was the year of “Obama rage,” in which financial tycoons went ballistic over the president’s suggestion that some bankers helped cause the financial crisis. They were also, of course, angry about the Dodd-Frank financial reform, which placed some limits on their wheeling and dealing.

The Masters of the Universe, it turns out, are a bunch of whiners. But they’re whiners with war chests, and now they’ve bought themselves a Congress.

Before I get to specifics, a word about the changing politics of high finance.

Most interest groups have stable political loyalties. For example, the coal industry always gives the vast bulk of its political contributions to Republicans, while teachers’ unions do the same for Democrats. You might have expected Wall Street to favor the G.O.P., which is always eager to cut taxes on the rich. In fact, however, the securities and investment industry — perhaps affected by New York’s social liberalism, perhaps recognizing the tendency of stocks to do much better when Democrats hold the White House — has historically split its support more or less equally between the two parties.

But that all changed with the onset of Obama rage. Wall Street overwhelmingly backed Mitt Romney in 2012, and invested heavily in Republicans once again this year. And the first payoff to that investment has already been realized. Last week Congress passed a bill to maintain funding for the U.S. government into next year, and included in that bill was a rollback of one provision of the 2010 financial reform.