I think so far, the only place to do it recreationally has been Colorado. I think the results have been extremely troubling, with young people using it, with more attention that police have to now spend on public use, on nuisance crimes, as well as on crashes and poison control calls. Clearly, it has only been three or four months, but when we look at the last three months as well as the last five years since they've had de facto legalization, it has not been something that I think folks would want to replicate.
On May 6th, 2014. See this statement in context.