If aspirin had to endure the FDA approval process today it probably wouldn't make it. It's more dangerous than Vioxx, which was developed to eliminate some of the problems associated with aspirin. But Vioxx is prohibited while aspirin is freely available. Why?
Jason Kuzniki provides an excellent explanation at Positive Liberty, which includes an analysis of why marijuana is still illegal. I urge you to read it.
Kuzniki's observations point out the need for a cheap and easy way for citizens to have more influence over their government. That's what we're trying to provide at Downsize DC. By lowering the cost of lobbying Congress we make it more likely that individuals will fight for changes that don't concern them directly.