Why are you picking on the US? There aren't many places in the world where pot is legal, and even in the more lenient places like California, it is only decriminalized without a prescription.
Using drugs should not be a criminal offense anywhere, or for any drug.
Commission of a crime under the influence of a drug should be an enhancement of that criminal charge, but the drug use itself should not be.
We spend billions and billions of dollars per year housing perpetrators of victimless crimes like possession of marijuana. Our prisons are overcrowded and people with violent offenses are being let out to make room for the drug offenders.
Seriously, the government needs to just admit that the "war on drugs" has failed. Possession for personal use should be neither a crime nor an infraction. Possession with intent to sell with out a license should be a civil infraction with a steep fine. The industries should be regulated and taxed, à la cigarettes. Huge revenue stream, huge reduction in costs, and everyone is happy.
The only justification behind drug laws is a moral one, and morality cannot be legislated. The government has failed big time on this and needs to give it up.
