The truth will make you sick. Congress is rich -- unbelievably rich. According to the Center for Responsive Politics, 249 of the 535 congressmen are millionaires. That's 47%. By comparison, about 5% of U.S. households are worth more than $1 million.And until recently, insider trading laws didn't apply to congress. They could buy or sell investments based on non-public information they learned from their privileged positions.As you would expect, that's led to some great returns for Congress' investments. In a study cited by Barron's, members of the U.S. House of Representatives beat investors like you and me by 55 basis...