Nearly 12,000 people have signed up for Pennsylvania’s medical marijuana program. A law, created in 2016, gives people under a physician’s care access to medical marijuana if they suffer from 17 qualifying conditions. Post-Traumatic Stress Disorder (PTSD), cancer and epilepsy are on the list, among others. But a new hurdle could make the choices of patients even more difficult. Due to federal law, any illegal drug use disqualifies a person from owning or puchasing a firearm.