And now what could become history's biggest transfer of tax dollars to bail out bad lending begins. Last month Congress passed a bill that gave the Treasury Department $800 billion to bail out Fannie Mae (NYSE: FNM) and Freddie Mac (NYSE: FRE). And while it is unclear how much money will be used to bail them out, the general outlines of the soon-to-be-announced terms are becoming clearer than they were last night.