Why did Bush order his appointees at Fannie Mae to make 440 BILLION in sub-prime loans?

Obama hired Franklin Raines, Jim Johnson and Tim Howard as " economic advisers" during his first pres.camp. This AFTER they had been fired from Fannie Mae and Freddie Mac for 'cooking the books" and giving themselves huge bonus's based on their dishonest books, they were caught, fired , forced to give back the money and nearly prosecuted and Obie figured they were just who he needed.Thats just about par for the course for Obama and his entire sleazy administration,tax cheats (Geithner)&,thieves (Raines,Howard etc.)We have had nearly three years to see who Obama is, and ....we see.I nearly overlooked Geo. Soros who visits our White-House so frequently (daily ?) and has our Presidents ear so firmly in his teeth...Soros turned Jewish neighbors over to the Nazis during WWII and to this day says he has NO regrets for doing so....Obie just adores him.