George McMahon, one of just two Iowans who can legally smoke marijuana for medical reasons. Here he opens up the cigarette and moisturizes the dose and then rerolls them in paper. Mr. McMahon is a participant in an old federal program, under which the government provides him with marijuana cigarettes. He has Nail Patella Syndrome, a rare genetic disorder that causes abnormalities of joints, kidneys and bones. He uses marijuana several times a day to deal with the symptoms. (Register file photo)