if he/she are charged with a drug related crime, then more than likely the person charged will be on probation 1-3 years... wich meens drug testing and cops dropping by unexpected.. But after that time you shouldnt have a problem with a med card.. I would think anyway.... if your on west coast no prob!!it wouldnt keep you from it, but it might suspend your eligibility for the period of time in which you are facing these legal issues.