Thanks to greenie super-low interest rates Greenspan brought in the early 2000s and his long-standing disdain for regulation are now held up as leading causes of the mortgage crisis.

He should have raised them gradually ( admittedly), but didn't. Sounds like we are now repeating history.
_________________________
He who joyfully marches in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.

- Albert Einstein.