The official rationale is bank stability and credit requirements needing a certain minimum amount of liquid cash by law and it is collateraled loans. (Although

The official rationale is bank stability and credit requirements needing a certain minimum amount of liquid cash by law and it is collateraled loans. (Although corporate bonds as collateral is a concerning escalation as either needing to take them as they were out of free treasury bonds or worse given needlessly.) Do you know what sort of things were otherwise unreported?