Greenspan (regulators): for he kept interest rate too low (1%) for too long, during the recession after dot com bubble.
Bush (politicians): for his failed Iraq war which cost American tax payers more than 500 billions so far. He asked American “go shopping” after 911, in addition to buying a car or a house. Democrats are no better in this aspect: Fannie Mae and Freddie Mac have deep roots in Democrats leadship.
(Video by LATimes: anxious customers on day 2 of IndyMac Fed takeover)