By law, every comer must be seen and evaluated at US emergency rooms. Those in imminent danger are required, by law, to be treated. However, the law does not require those without emergency conditions to be treated.
In practice, those with non-emergent symptons are almost always treated, anyway. They've already cost the ER money, and they're a liability risk, so they get treatment for non-emergent conditions.
One of my friends, who's in the medical profession at our local hospital, told me many practicioners fear legal reprisals from scum like Edwards if they make a determination of a non-emergency condition and, because of illegals' less than sanitary living conditions, should a complication arise, it potentially puts their careers and reputations in jeopardy - so they just treat everyone.
It's akin to the zero-tolerance policies adopted by schools that removes the judgement error out of personal decisions..right or wrong, because of the fear of costly litigation, who can blame them?