Dignan, the plan is to allow people to invest a certain percentage of THEIR retirement fund. There would be strict guidelines on what you can or can’t invest in. (IPO’s, for instance, would be impossible, because you could only move your money on a semi-annual, annual or quarterly basis.)
There are precedents for this type of thing. In Ohio, government employees have a system called PERS (Public Employees Retirement System) where the individual can pick from a selection of mutual funds. Some have more foreign exposure, some have more bonds, others have just large cap, some have a mixture of small cap and large cap. You just have to pick from the mix. One year my return was 20%. Another year it was flat. Averaged out, it beat a 2% return by a handy margin.
The stock market doesn’t offer you a guaranteed return on your money, that’s true. But conservative investers could invest in vehicles that offer very little risk to principal. For instance, 1 year c.d.'s were being advertised at 7% recently, $5,000 minimum. A c.d. is not risky, and a 7% beats the pants off a 2% return.
In the end, as Bush said, it’s OUR money and we should be entrusted to invest it, at least some of it, as we see fit.