Russ has a great post concerning Rules of the Road. He equates the need for rules on our financial instutions just like we need traffic rules.
When I was a security guard the only posts that were armed involved money. Banks, armoured cars, and just about anywhere that has large amounts of cash have someone in a uniform and a side arm. Those businesses understand that where there's money there's temptation to steal.
Now why would our dear elected officials not understand this simple concept when they had Billions of dollars to businesses that have wrecked the economy. The government needs to watch for potential crooks on wall street that handle most of the country's economic life blood.
The ideology of a self regulated market is just a con by crooks to steal the store.