The left is getting educated. Pelosi voted yes to gut regulation of OTC derivitives in 2000.
http://www.salon.com/opinion/greenwald/2009/04/04/summers/index.html
Pelosi also pushed von Paulsen's Bailout Ultimatum through congress. It took French president Sarkozy and other European leaders at the G-20 to expose these scams.
Another's of Sarkozy's proposals was aimed at breaking up the monopoly of credit-rating cartels. Again, the looters on Wall Street lobbied the US government to oppose this.