Quoting SpaceCowgirl:“ I doubt it's about money. The government could make a lot more money if they legalized marijuana and taxed it.”
They wouldn't be able to have alot of control on how the population would obtain it. That's why they wouldn't be able to tax it EFFECTIVELY. Lots of people grow their own, and lots more get it smuggled in the U.S. in care packages...even if the government did grow marijuana and taxed it, tons of other people could grow it and not tax it and make more money. If the government was smart, they would legalize marijuana, but keep it illegal to grow it. Potentially, it could open up alot of jobs for immigrants like farming, cultivating, and distributing...but the government doesn't think like that....