Boy, imagine a system where part of your taxes could go towards a publicly funded healthcare system which would prevent problems such as this from arising in the first place.
Probably a refusal to imagine it as a possibility in the first place, I suppose.
That said, if you do it on a state by state basis then qualify will vary just like it does between the different European countries.
But as the US is a single nation, the mere existence of variation will mean some people say the system is a failure.
But, why not? How is population size relevant?
I would direct you to the United States which has a pretty amazing public healthcare system called Medicare that has an 80+% approval rating among those lucky enough to be on it.
Healthcare in this country is a racket.