Comment by musictubes

Abortion is currently too divisive in the US to get a national health care system going. One side will absolutely refuse to include it and the other will absolutely require it. If one side brute forces it there will be immense backlash.

Along similar lines it isn't clear that having the federal government controlling healthcare at a more fundamental level is a good idea. Many (most?) would shudder at the thought of this administration controlling healthcare.