Rohypnol is marketed as a sleeping pill in Europe and Latin America, has also been used to relieve cocaine side effects, and is legal in over 60 countries. However, in the United States, it is illegal and has never been approved by the FDA for medical use here. Yet it is currently classified by the DEA as a Schedule IV drug, meaning it has low potential for abuse or dependence relative to that of Schedule III drugs; the only lower potential is in Schedule V drugs. How can you explain this?