Just say no?
As I recall, the research found it was highly effective at improving subjects (vs. non-subjects) images of law enforcement, but had no discernable effect on subjects (compared to non-subjects) when looking at drug use, drug abuse, or drug-related crime.
So your answer is having Nanny Government ban it?
Can't worry about free will if you don't have it, I suppose.
Vapes are an easy target right now. Heart disease and auto accidents are some of the greatest threats to the average American, but you'll never hear a politician going after those.
E-cigs are a relatively new vice. Hardly comparable.
In the free market those rules wouldn’t exist and people would be upset about taking their rights away when you regulate them.