Does everything in America need to be healthy in order for it to be legal? Is that why the alcohol lobby so badly wants to prove that booze is good for us?
That was (and is) entirely state dependent.
https://en.wikipedia.org/wiki/List_of_dry_communities_by_U.S...
What do you mean by that?
On the other hand, I suspect the simple profit motive is much stronger. Headlines like “Study suggests one glass of red wine per day reduces heart disease risk” is music to a winery’s ears.