NPR was doing a story on marijuana vendors in California, which are legal under their state medicinal laws but they still occasionally run afoul of the federal government. It got me wondering why marijuana is still classified as a drug no less dangerous than cocaine or heroin by the feds. The thought struck me that perhaps it might be due in part to how easily it can be grown by the everyday citizen if it were legal, as opposed to other drugs. Grandma might not want to be bothered with a meth lab in her basement even if it were legal, for example, just because of all the fuss involved. But how hard is it to grow pot alongside your petunias? So maybe there's a fear on the part of the government that a recreational drug so easily grown would be completely untrackable (and therefore impossible to regulate and tax)?