Not being funny, but Guiliani forced the whole mortgage banking business into insolvency to make a point that some still think was Vendetta. Whatever the case, Guiliani forced a vast capital market to halt, for no reason I've ever learned, and handed a four trillion dollar bill to the taxpayer, for kicks. No wonder Trump likes his advice.
As I understand it, it doesn't matter if they are Chase, or BECU - most banks don't actually own any of the mortgages they issue.
The problem in 2008 was the fraud, the irrational exuberance, and really dumb investments by the investment branches of a few investment banks. The retail arm of, say, Wells Fargo, which issued a whole bunch of shitty mortgages was fine.
Whether or not you think that investment branches of banks deserve to be bailed out is an exercise for the reader.