The facts about the financial collapse of Fannie and Freddie are pretty clear and a matter of public record. The company managers, their regulator and the Treasury have all said that the losses which crippled the companies were caused by the purchase of loans with lower credit standards between 2005 and 2007. The companies explicitly changed their credit standards in order to regain market share after Wall Street began to define market credit standards in 2004. As proved to be the case for most other investors in Alternative-A and sub-prime mortgages, this was a very bad idea.