I really know very little about this legislation. Was it bipartisan?
Answer: It passed by unanimous vote in both houses.
One problem with google is that it is great for search for obscure information, or for not so obscure, but non controversial, information, where there is likely to be a wikipedia article.
In this case, it was hard to get past the opinion pieces.
What I was looking for was exactly where the President, as part of his "America's Home Ownership Challenge", actually changed regulations, initiated legislation, or really did anything at all beyond give lip service to the issue. I found a few things, like the above legislation, that were aimed at making homes more affordable among low income, especially low income minorities.
I found something called the single family home ownership tax credit, but to be honest, the articles all talked about the "proposed" tax credit. I couldn't tell if it ever passed. It gave tax credits to home builders building 1 to four unit buildings in distressed neighborhoods. Targeted tax credits are, apparently, part of the "free market".
One specific modification, made in 2004, was to eliminate the debt to asset ratio required for investment banks. That seems like a collossally bad idea, and it doesn't seem to have worked out so well.
What I was really looking for was something to substantiate the charge that deregulation caused the subprime mess. I found lots to confirm what everyone already knew. The subprime mess was caused when lots of people borrowed lots of money they couldn't afford to pay back. This happened at all levels of income and housing prices. Suddenly, people started making loans without the traditional requirements of down payments and income verification. The President supported at least the initiatives to lower down payment requirements, eliminating the 3% downpayment minimum for an FHA insured loan. That strikes me as another awful idea, but I doubt the Democrats complained about it
I found one reference, but no specifics, about Bush loosening the oversight of the credit default swap market. That's what brought AIG down.
Meanwhile, issuance of mortgage backed securities started buying these toxic loans, while previously they had avoided them.
So, why did it happen during this decade, when previously, it hadn't? Did the Bush administration repeal existing regulations? Did it fail to enforce existing regulations? Did it fail to react when new institutions sprang up, that skirted existing regulations? Or was it just sudden changes in market psychology?
At any rate, the train wreck was easy to see coming, and the engineers were asleep at the switch.