I believe Richard M Nixon started the “War on drugs” in 1971 declaring drugs and drug use “Public enemy number one”
I remember a discussion with my father, I was 16, about what a fiasco this would become.
You’re right about President Nixon starting the intensified anti-drug policy. I’d forgotten. But President Reagan did increase the effort.
https://en.wikipedia.org/wiki/National_Youth_Anti-Drug_Media_Campaign
https://en.wikipedia.org/wiki/Office_of_National_Drug_Control_Policy
https://en.wikipedia.org/wiki/Comprehensive_Crime_Control_Act_of_1984
https://en.wikipedia.org/wiki/Mandatory_minimum_sentences
I saw positive results in university students during the late 1980s.