Now I have said repeatedly the reason no one wants to pursue this line of action is that it is likely to reveal fraud, including at high levels (remember, post Sarbox CEOs and CFOs are now required to certify financial statements) and Team Obama does not want to do anything that would jeopardize confidence in the financial system. But this is completely wrong-headed; the reason there is no trust is the public at large sees considerable evidence of malfeasance. So the confidence is already gone, and an organized process to root out at least the worst instances of rot would be salutary.
It's a system which has proven itself to be incompetent at best and extraordinarily corrupt at worst. There's no reason to prop up the people who did this.