So if it took a constitutional amendment to ban alcohol, how did so many other substances get banned without one?
That does not matter...
Alcohol prohibition was done Constitutionally and it was also repealed Constitutionally...
Tobacco, for instance, should either be banned constitutionally or not regulated like it is...
Tobacco, like marijuana and opium, can be harvested like any food product.
A stronger case can be made for “medical opium” than for “medical marijuana.” (I think medical marijuana is a total bullshit story.)
It is a perfectly natural fruit of the earth and should be treated like any other vegetable.