Illegals use the ER for everything because apparently they can’t be denied. I had to go three times while I lived there, and each time I sat for four hours, surrounded by people who were clearly there for non-emergency reasons, and not a one who spoke English as a first language. The ERs in L.A. are always packed, from what I saw.
Oxygen is hauled by tractor(big rigs)and trailer, the gas companies that sell oxygen have thousands of trucks, therefore fake shortage. Oxygen in Dallas can be in Cali in two days or so.