I'm not sure this has the effect you are suggesting but it did make me laugh. Makes you wonder who decides what is a first world country and what is a third world country. In some ways the existence of a significant portion of American's (those unfortunate enough to be poor) is worse than a third world existence.
Clear cut according to a definition absolutely nobody uses any more. There's no longer a Soviet sphere even if you wanted to use that definition and the post-soviet sphere has diverged dramatically.
If you're a legal citizen, and in one of the states that opted in to Medicade expansion (many states, all "red" states did not, despite it being literally free money from their prospective.)
A bigger problem is that the limits are quite low (Max income limit will be exceeded by someone making minimum wage in a lot of states. It's only $18k if single, going up to $36k for a family of 4.
That means there's a HUGE donut hole problem of making too much for Medicade, but not nearly enough to actually afford healthcare - or they maybe have some crappy employer plan that has a high deductible that would bankrupt them to even approach.