On the evening of Scott Brown’s election, I wrote that among the reasons for his victory was resentment of “a host of actions to prop up Wall Street firms at the expense of taxpayers.” Who would have thought that less than six months later Brown would cast the decisive vote in favor of legislation that institutionalizes Wall Street bailouts, and whose sponsors — Christopher Dodd and Barney Frank — played key roles in bringing on the meltdown, not to mention representing everything that is sleazy and corrupt about Washington. If Brown wasn’t running against Barney Frank when he railed against...