Earlier quoted context omitted.
I tend to expect a federal decriminalization of marijuana in the next 10 years. I doubt we'll see a decriminalization of crystal meth in the next 50 years.
What drug would be next to target on the list of "good candidates for decriminalization" after marijuana?
Psilocybin is the first possible candidate that comes to my mind, but I'd rather have us use a sound framework of harm-minimization than to favor/disfavor any particular drug.