Greenspan's ghouls and Kool-Aid drinkers

President Barack Obama doesn’t need to just overhaul financial regulation. He needs to exorcise the ghost of Alan Greenspan.

For far too long, regulators weren’t willing to regulate, inspired by the view of the former Federal Reserve chairman that too much oversight is a greater threat to markets than too little. That turned out to be a bigger cause of the credit crisis than the particular structure of the agencies overseeing the financial system.