While China is considered part of the global south, its economy is so massive and it is so influential globally it really shouldn’t be.

Edit: Also in China’s case, that was the UK, not the US.

Lieberman wasn’t a Democrat.

Yeah mate, he tried. Congress didn’t pass single-payer and he didn’t anticipate that level of Republican hostility because it hadn’t happened on that scale in the modern era of politics. So we got the ACA instead, which has likely saved thousands of lives just through no denial of coverage for preexisting conditions, let alone everything else it did.