In Pennsylvania, medical marijuana patients are being charged with DUI even when they are not impaired. State law treats any detectable amount of THC or its metabolite, carboxy-THC, as grounds for a criminal charge. This includes non-psychoactive traces that remain in the body long after the effects have worn off. Many patients are shocked to learn they face serious legal consequences simply for using legally prescribed medication. A second or third offense within ten years can carry mandatory i