For very good reasons, doctors and other health care providers would not want to be forced into the role of immigration officers. Health care professionals must establish a relationship of trust with their patients, and if the patient is afraid s/he might be turned in, the patient might not seek needed medical care. Whether we like immigrants or not, it is not a good idea from a public health point-of-view to allow sick or injured people to walk around untreated.
Serious contagious conditions like tuberculosis, H1N1 influenza, whooping cough, measles, and many others should be treated — no matter who contracts them. It is in America’s best public interest to keep such diseases under control. –jcf