Attorney cautions Ohio medical marijuana users: "Don't drive"

Ohio has joined 29 states and the District of Columbia to legalize the use of medical marijuana.Defense attorney John Saia said medical marijuana, prescribed to relieve pain and nausea, could lead to legal headaches on Ohio's road.Saia said Ohio currently measures marijuana metabolite concentration in a driver's urine or blood to determine whether they're guilty of OVI.Because THC stays in a person's system for days, even weeks, Saia said a medical marijuana user would likely test over the legal