I’m afraid the argument “if you don’t like it, leave” is hopelessly naive. It’s an attitude that precludes striving for improvement. But, as it happens, after 27 years in the USA I did leave and I’m extremely happy to be in Europe again. A place where no one loses their home because of the cost of medical treatment. A place where serious ailments are treated rapidly, and where less serious ailments do indeed require on to wait, because demand is always infinite and resources are always finite. Europeans don’t think health care is only for those wealthy enough to afford it.
And thoughtful people know better than to rely on “whatabout…” arguments, because they are invariably specious.