Really? That is news to me, as a dual US|EU (Croatian) citizen, who is culturally American--but currently living in Croatia.
Even Croatia has a higher life expectancy than the United States. Yep, even those "eastern European countries" (that are within the European Union) that Americans refer to with derision, often have higher life expectancy than the United States.
See: https://www.reddit.com/r/croatia/comments/nuiyk1/hrvatska_sp...
Also, just in case you want to blame this on "lifestyle factors" (which means that this is a public health matter, which the United States has severely underfunded--locally, state, and nationally for more than a few decades now), the third leading cause of death is believed to be preventable medical errors. (The source I provide has been verified by several follow-up studies.)
See: https://www.bmj.com/content/353/bmj.i2139/rapid-responses
Also, you don't know what you are talking about here. I have studied healthcare systems worldwide for hundreds of hours.
Ironically the IMHE group that does the coronavirus projections is world renowned at producing this data. All of this data is open-access.
For starters (easy reading) this article is relevant: http://www.healthdata.org/news-release/how-healthy-will-we-b...
But, seriously, we have far from the best healthcare system in the world. That is not even remotely true. There are several countries where a woman can give birth and is less likely to die, compared to the US.
I wish you were joking.