Step 1: Pass a law banning people from engaging in trade. For example, let's ban the sale of human organs and tissues for transplantation.

Step 2: People attempt to engage in trade anyway. For example, people might steal bones for transplantation because the quantity demanded exceeds the quantity supplied from donors at a zero price.

Step 3: Pundits step forward to decry this unethical and illegal behavior, and call for additional regulations to close the "loopholes".

"Bodies and tissues are now becoming commodities, not for the common good but for the money that is generated," said Ronn Wade, director of Maryland's Anatomy Board . . . Federal law allows the donation but prohibits the sale of human organs and tissues for transplantation. There is no prohibition on buying and selling body parts for medical and scientific research, and no federal regulation of brokers of body parts for research. [Emphasis added.] . . . Arthur Caplan, director of the University of Pennsylvania's Center for Bioethics, said there is a lack of oversight regarding who is collecting human tissues and body parts for scientific or medical research. . .

[Whole thing.]

Step 4. Rinse. Repeat.