Bernanke was appointed chairmen of the Fed in January 2006. The bubble that burst in 2007 was well underway by that time.
But plenty of blame to go around. The basic problem is that big money has way to much influence on government and the media.
https://en.wikipedia.org/wiki/Ben_BernankeEdited by Knucklehead at 16:14:50 on 11/30/17