From a story called "hooked" on the history channel lately. The explained the reason why pot became illegal. I think it was 1937, and it not really made illegal. You had to have a license to get it--but the government never printed any licenses for it. It was the same tatic that was used to make machine guns not lawfull to have. It was done to get rid of illegal aliens mostly. They knew most of them smoked weed, and somehow (How escapes me now) they used the law to drive them back home after we were done with them. The law got reversed about 30 years later by Timmothy Leary (the hippy herion head of the 60's), and the guy had a good case. His case was, you can't get a permit unless you have possesion of weed. But if you have possesion of weed, being ilegal with out a permit, you are in violation of the law. Therefore, you would be incriminating yourslef by trying to get a permit.
The law was thrown out and pot was actually legal for part of my young life (I never knew that). Then, I think it was Regan who started the war on drugs, and made it all criminal again.
Turn on
Tune in
Drop out
and that is what the hippies did.
I don't know if all drugs should be legal. I have a hard time with that one.