>> The USA will likely never get to an efficient govt. single pay system (unlike every other industrialized company).

Not really efficient.

Due to low pay there is a huge shortage of medical workers.

Also for non life treating conditions there are waiting lists for the next few years.

Had a light knee injury during football game? Your surgery is scheduled for 2027. Real story of my friend from Poland.

And you pay 9% of your income for this "care".