You can thank the Government forcing banks to lend money to minorities who couldn't afford the payments for that.
I've went over this before, in countless other topics.. The loans that you are talking about are a very "small" group of mortgages and they didn't cause this issue. If you know anything about the lending industry you will know that the most profitable loans are the ones in which the person getting the loan is considered "high risk".
Go back and look at the history of these bills and you will learn that it's wasn't congress forcing anyone to making anyone issue loans to low income people. You will find out it was the banking industry that pushed congress to relax the regulation to allow them to lend to these people.
Do you understand it was the banking industry that actually wrote the bill you are talking about? It was lobbyist paid for by these very companies whom are in trouble now. Now one twisted their arms and made them do anything. They wanted to do it and had been lobbying Congress for years to get the regulations relaxed just so they could get govt insurance on high risk loans.
The largest group of people having mortgages defaulted on, are not low income families. The largest groups are middle class people who bought much more than they could afford. These are the people that could afford a $100 to $200k house but were given loans for 250k or more.
It wasn't low income people buying $200k to $500k houses it was the middle class. The simple fact is by the deregulation of the markets in which the lending companies pushed for, they were able to get people into mortgages they had no business being in. That most certainly wasn't Congress twisting any one's arms forcing them to loan. That was the lending industry pushing bad loans because it made them more profit as long as the ball kept bouncing.