We would not accept shitty ingredients in our food, being told it was a grade beef, when it turned out it was actually alley cat, sewer rat and suchlike mixed in.
How on earth did they get away with a grade securitised mortgage products that actually contained a stink load of ready to default loans?
Forget blaming a specific person, or whether it may have been technically legal, what can be done to stop them doing this again?