I'll take that statement at face value in terms of what you've said, but according to the evidence that's out there, it seems that cannabis use is now at its lowest level since 1990, and significantly so.
As for the approach of legalization, we have a few states that have done it. Is there any evidence that this use will go even lower with your approach? If you define it as not working—going from 50% at its peak down to 23%—how are you going to define something that's working?