"The boast that America has the world's best health care is only true if you believe that a system that costs more than any other, covers a lower percentage of people and produces a life-expectancy that is the lowest among comparable countries constitutes "the best"."
We do have better quality care than other western countries. People aren't flying to Germany or Russia to see specialists. They come here when they want or need the best.
Anyway, prove that a fact is a "boast".
Yes, but you are talking about individual centers of treatment not a healthcare "system". The treatment centers, which are often universities or connected to universities are the best in the world. American Universities are also the world's best.
But the American healthcare system is an overpriced piece of junk in comparison to the rest of the rich world.