[dragonwriter]

Rohrabacher-Farr, as long as it is in effect, is pretty much a complete bar to federal prosecution for in-state actions associated with state-approved medical marijuana activities (both on its face and, because DoJ tried to narrow it in practice and got challenged, this is also fairly well tested in the courts.)

Of course, that's tied to federal spending bills and needs renewed with each new spending authorization, so without timely and full-year budgets it's kind of perpetually at risk of near-term expiration.