In a move that could either send BAC stock limit down overnight or send it soaring (we are still trying to figure out just what is going on here), the NYT has brokenmajor news that the US is preparing to go nuclear on more than a dozen big banks among which Bank of America, JPMorgan Chase, Goldman Sachs and Deutsche Bank, in an attempt for Fannie and Freddie to recoup $30 billion if not much more. The lawsuit is expected tohit the docket in the next few days: The suits stem from subpoenas the finance agency issued to banks a year ago. If the case is not filed Friday, they said, it will come Tuesday, shortly before a deadline expires for the housing agency to file claims .