Precrime Detected
I think the powers that be have used their amazing psychic powers to predict the future behavior of people who would ingest intoxicating substances (other than alcohol, of course, which remains legal depite being widely abused and a factor in huge amounts of death and destruction and has ruined coutless lives).
These legislative bretheren to Karmak the Magnifiscent (remember the Johnny Carson skit?) have predicted that since some people who smoke marijuana will then drive while impaired, possession of a small amount of marijuana shall be treated just like a DUI. Both misdemeanors with a possible year in jail. If you do the dope, you must be planning on doing the crime, so we'll punish you even before you get that far.
And they've decided that since some people high on crack cocaine or methamphetamine rob people, they'll just make it a major felony to possess cocaine or meth, and set the penalty on par with robbery. Well, it's not quite that bad. Your first robbery can get you 20 years, but your first Schedule 2 drug charge can get you 15 years. But if you think the legislature takes robbery more seriously, think again. Your second offense of robbery is still 20 years, but your second drug offense can get you 30! Either way, the idea is the same. If you have the drug, you're going to do a robbery, so we'll just nail you ahead of time, rather than waiting for you to actually do something bad to others.
That's why in some states carrying a gun is a felony. If you carry a deadly weapon illegally, you must be planning on using it illegally, and any use of deadly weapon in an illegal manner would have to be a felony crime, so it's okay to just put you in prison for several years merely for possessing the weapon. C'mon, we all KNOW you were eventually going to stab some guy in a bar fight, or point it at that guy who pulled into "your" parking spot... so it's fair. Efficient even.
Gee, I wish more people had the power to detect crime before it happens. We need to cultivate such individuals' skills and have them work in a "precrime" detective squad.