So why is he doing this? He's doing it because a lot of people bought million-dollar homes that they can't really afford to pay off, and they may have to let go of them and go back to just living on $500 to $1000 a week (or more), possibly even taking up rental accommodation until they can save up for something better.
It makes me think of the story in the Bible, where a crooked book keeper is going to lose his job, and so he contacts all of his employer's debtors and tells them that he has just erased half of their debts. Why did he did it? Because he was using his position to buy himself incredibly rich friends who would help him after he finished his present job!
The tragedy is that there is hardly an economic problem in the world (I mean real problems with real human suffering) that could not be fixed with that kind of money, and yet Geroge W. Bush decides to give the money to Wall Street instead! Is this not the height of arrogance in a country which has ignored the plight of the rest of the world?