He's referencing the response of the Obama administration to a petition to legalize marijuana on it's petition
website.
The responses from the administration make it clear that website isn't about listening to the petitioners, but rather telling them why what the government is already doing is the right thing (and why you should just sit down and stop making a fuss, thanks). In the case of marijuana, their argument is painfully thin. They trot out the "marijuana significant use is a source for voluntary drug treatment admissions and visits to emergency rooms" line without mentioning that their source shows that underage drinking causes far more emergency room visits than marijuana (it doesn't mention consumption by adults however. I'd be interested to see that statistic). And then they have this gem:
Like many, we are interested in the potential marijuana may have in providing relief to individuals diagnosed with certain serious illnesses. That is why we ardently support ongoing research into determining what components of the marijuana plant can be used as medicine.
In other words, if you get it from Big Pharma, it's a-ok. If you buy it from a local grower (or grow it yourself), then you're a drug-using felon.
I don't have a a personal interest in this issue. I don't use marijuana, nor does anyone I know (that I'm aware of, anyway). But the patronizing bullshit that gets spewed by politicians and law enforcement about drug laws shows a level of contempt for citizens that is almost unbelievable to me.