The Obama '12 campaign's slogan, for the moment anyway, is "We do big things." It was certainly true in the president's first two years, and looking forward, the next big thing (after we get this pesky budget stuff worked out) may be tax reform. You remember the extraordinary New York Times story about how General Electric, the largest corporation in America, not only pays no taxes on its billions of dollars in profit, but actually got a tax rebate of $3.2 billion in 2010? That's because they employ a small army of lobbyists and accountants who make sure that the corporate tax code is riddled with loopholes, then allow them to exploit every last one.