Words mean things, and vicious and vituperative instructions to obedient people have consequences.
I suspect (but do not know for sure) that B of A was having "issues" anyway; and that the Durbin venom may have poisoned a flicker of a recovery.
Speaking of recovery, if B of A swan dives, it would be yet another anchor on our foundering economy.
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As I understand it BofA was poisoned with the purchase of Countrywide which happened because the Fed demanded BofA buy it.