Bill O'Reilly says he supports a public option!
Who else knew he was a "socialist"?

EAllusion wrote:Mainly
1) Extremely cheap credit - fueled in part by the Fed's low prime rate and in part by overeager Chinese investment due to their high savings rate.
2) Investors having intense demand for mortgage backed securities because of the steady, high rate of return without properly assessing risk and/or using questionable financial instruments to hedge their risk leading to
3) This creating intense demand for housing loans that in turn completely crippled the banking industry's loan standards. There was no need for any standards due to the ability to turn a profit either by 1) selling the loan into a MBS or flipping the property for a profit due to the quickly rising prices. Give a loan to anybody = money for the people doing it at the moment. Of course, this lead to an unsustainable bubble that collapsed in a financial apocalypse, but the commissions were pretty sweet for a time.
Government programs that incentive banks to provide low-income housing loans were a very minor factor.
This This American Life episode explaining the matter has a much deserved reputation for being great:
http://www.thisamericanlife.org/Radio_E ... pisode=355