Indeed. My impression is that state funded healthcare is such a big issue in the US, that that is used to map between European and US politics. I'm not sure that that works. The far left in the US seem to be straight forward Marxists to me. The project veritas recordings - was the man who spoke positively about Stalin a 1960s far right type?
It was fairly mainstream when proposed by FDR, Truman and LBJ, but sure, maybe they were all closet marxists. It's so hard to tell.