There are many people in the USA who don't file taxes working for cash. They truely fly under the radar. They expose themselve's for healthcare but claim they are broke, living on the street in a cardboard box etc.<quoted text>
The one flaw in your statement is that insurance is or will be required by law for everyone soon. Otherwise the cash only doctor is something to look into.
Many are criminals and it's best to leave them alone as long as they stay out of jail, it costs a lot of $$ to house them in jail. If the Feds go after them they will probably break the law and go to prison where healthcare is FREE.
Reminds me of a retired old timer who always said when the COPs pulled him over he would tell them: "I won't pay no fine but sit out punishment in jail". He never went to jail.
There IS freedom in the USA.