I'm not sure who that would be. Part of the problem with any WOD situation is there's too much money on both sides of the aisle and most organizations working it are just trying to get a bigger piece of the pie. Probably a medical organization who's working the data in a way that's sane, a recovery organization that's not tightly associated with AA (who is famous for cooking data every chance the get). Someone that's got a core of verifiable data that can be extrapolated without resorting to silly math.
I think that's my final point. Without a firm belief that any data I present will be acceptable, it's not really worth my time and trouble to acquire hard to find data for an internet argument.
If you want to see how bad the meth problem is in Southwest Missouri, you can easily see for yourself by driving through some of the town around Springfield.
This isn't made up by people looking to pad their pockets, it isn't hyped to promote new laws. It isn't being overblown.
But then myself and all the other people who live out here in the midst of it are unreliable sources.