Is the SEC covering up Wall Street crimes?

Taibbi goes for the jugular.

For the past two decades, according to a whistle-blower at the SEC who recently came forward to Congress, the agency has been systematically destroying records of its preliminary investigations once they are closed. By whitewashing the files of some of the nation’s worst financial criminals, the SEC has kept an entire generation of federal investigators in the dark about past inquiries into insider trading, fraud and market manipulation against companies like Goldman Sachs, Deutsche Bank and AIG.