Marijuana and heroin were both legal in the USA at one point. Heroin itself is (was?) a trademarked brandname. My point being that governments will allow some

Marijuana and heroin were both legal in the USA at one point. Heroin itself is (was?) a trademarked brandname. My point being that governments will allow somethign up until the point that a group of politicians either see a threat or some votes in banning it.