Obamacare is not relevant in this story. Hillary Clinton is almost seventy years old and would be covered by Medicare.
Depends if she paid into it. Many government employees don’t they have their own system which is more lucrative. She is SS and Medicare age @ 68, she qualified for Medicare and reduced SS at 62 and went to full at 66. Trump is 2 years older at 70. Age might not be a good thing to bring up.
They should both turn over medical records.
We might need a set upper age limit for president put in place considering the toll the position takes on a person. And certain health conditions like heart or brain damage should eliminate them from running.
There are some things that even Medicare won’t touch.