Alan Greenspan, a once celebrated conservative economist, served from 1987 to 2006 as Chairman of the Federal Reserve. Lauded in his time, Greenspan has since been blamed for the 2007 financial crisis (along with many others) due his support for extremely low interest rates that encouraged a housing bubble in the mid-2000s. What's surprising about Greenspan was that despite his Republican affiliation, Bill Clinton kept him on board as Fed Chairman in the 1990s. What if Clinton had decided to replace Greenspan? What effect would this have on the American economy and the housing market? Would the 2007-09 financial crisis still happen?