We've tried basically everything else, let's try this.

We take a thousand square miles of BLM land in the middle of the desert, and turn it into freedrugcity, and ship anyone who wants free drugs there.

Probably cheaper in the long run.

Why shouldn't the state provide free drugs or drugs replacements? This way the state (the society) owns the problem AND the solution, and you don't even need tax payers money since you just erase most of the illegal income sources of the organized crime. The state could also push rehabs, controlling the addiction problem, literally everybody wins, minus the criminals.. Free drugs. Free money. Happier, healthier empathetic society. Or in one word - Netherlands

I believe that already happens every September in North Nevada...

Free as long as you spend 20k on gear and food and tickets and… drugs

As long as there's a fence I'd be willing to try this.

Lets put this in the "Things that sound like good ideas in practice but don't actually work in reality.

So is this a place are interned to and can't leave easily? Well, great, you've created a drug terrorism ghetto.

Is this a place people can freely come and go to? Well, it will likely be "too successful" for a number of the hard anti drug politicians, remember this is supposed to be a failure to show how bad the moral failings of people that even thing about drugs end up in. That and when said politicians kids get caught there they'll have the entire place destroyed.

Also doing drugs probably doesn't mean "crime free for all here", so, um, who's policing the place?