Ron Tupper is the chairman of the Milagro Clinic, in McAllen. He says lack of access to health care means unnecessarily harsh cases in his emergency room. "The chronic problems are not diagnosed and get compounded and get complex because people can't see a doctor. These are things that wind up in the emergency room. They're totally preventable." Tupper Is planning to use homeland security funds to purchase large high-tech medical , vans that can be sent into colonias to work as rolling clinics.