One of my first jobs out of college was helping to manage a H&W Fund for a labor union. The Fund provided self-insured BC hospitalization and a major medical benefit as well.
We were responsible for verifying the member or claimants eligibilty and we also processed and paid the major medical claims. I learned a lot in that job. It was after ERISA had been enacted and we had to prepare and publish and distribute a benefits booklet for every union member. I remember I had to give a talk explaining the benefits to about a billion members at a dinner one evening [OK maybe there were 500 people there].
Anyhow, we created a flowchart or decision tree to use to evaluate each claimant's eligibility [you had to work like nine months in the last 18 months for a union shop to be eligible]. We validated the employment history and eligibility for every claim we got no matter how small the medical bill! [and this pre-dated computerized records!]
That is why I am stunned but not surprised when Obama says "illegal immigrants are not covered" because health care providers will not be allowed to check or verify the citizenry status of patients!! That means, of course, illegal immigrants will be covered and that means Obama did lie last night.