"In 2003, while the ranking minority member on the Financial Services Committee, Frank opposed a Bush administration proposal, in response to accounting scandals, for transferring oversight of Fannie Mae and Freddie Mac from Congress and the Department of Housing and Urban Development to a new agency that would be created within the Treasury Department. The proposal, supported by the head of Fannie Mae, reflected the administration's belief that Congress "neither has the tools, nor the stature" for adequate oversight. Frank stated, "These two entities ...are not facing any kind of financial crisis ... The more people exaggerate these problems, the more pressure there is on these companies, the less we will see in terms of affordable housing."[62] In 2003, Frank also stated what has been called his "famous dice roll":[63] "I do not want the same kind of focus on safety and soundness [in the regulation of Fannie Mae and Freddie Mac] that we have in the Office of the Comptroller of the Currency and the Office of Thrift Supervision. I want to roll the dice a little bit more in this situation towards subsidised housing." - wikipedia. Sure, Frank had nothing to with it, ha, ha, ha.
I never said that corporations are without blame, they obviously have made some poor business decisions that while increased revenue in the short run were unsustainable. We agree there. However, the idea that Fannie & Freddie were not involved is uninformed. Who do you think creates all of the underwriting standards for the big bank lenders? The big banks are really just servicers of the mortgages, and then because those loans have government backing of some sort they are rated higher in quality then they actually are. True, the investment world acted like a kid in a candy store at that point and should be held accountable for their short sightedness. To think that Fannie and Freddie "simply adjusted their practices to keep up" is just plain wrong. They started it at the direction of Presidents from both parties for a couple decades. The banks wrote mortgages that they already had a buyer for in Freddie & Fannie, therefore Freddie& Fannie provided the drug to the banks at the direction of government trying to nudge business in the "correct" direction. The dealers(Fannie, Freddie, and FHA), users(banks, investors, and overleveraged borrowers), and the suppliers(well intentioned but flawed big government) are to blame for their part.
The tax situation is a separate argument, but who creates the tax code? I guess that you could argue that corporations buy favors from politicians to make rules that benefit them in the tax code, but if government wasn't in the position to try and engineer the economy as they see fit, then those loopholes wouldn't be there would they?