Interesting that the law quotes unlawful use rather than lawful use of drugs, surely the user of the drugs must be subject to the same drug effect. I guess this is to get round the problem that over 50%, thats half (statistically proven by the pharmaceutical companies which produce psychoactive drugs) of the population in the United States would then be unfit to own a firearm.

Actually when thinking about that percentage I think it may actually be higher since Aspartame (artificial sweetener is in so many products - anyone for a diet coke - you can improve your ability to become more suggestible to electronic forms of propaganda)