Hell the govement denies claims all the time,I don't see universal coverage changing much,
other than getting everyone signed up under one insurance program who is not already insured,even then your going to pay some thing. NO FREE RIDES
The government will have to cut costs just like insurance companies. They'll do it by denying services, by making it difficult to get treatment (longer wait times), by providing second rate drugs, care, machines, facilities. The quality will go down, costs will go up. Those of us who bear the brunt of the costs will pay EVEN MORE. Those who get a free ride as it is will continue to do so, and be joined by more like them. The rich will get the best care $$$ can buy - as always, and only pay a little more for it.