You don't have to assume. It costs twice as much as the most expensive health systems on earth, but delivers Afghanistan-level life expectancies. The problem isn't that we're spending too little.

Afghanistan is a whole decade off that cohort.

Life expectancy is a particularly bad metric to use to compare health care systems, because it's heavily influenced by (1) how much people drive, (2) how much violent crime there is, and (3) how much drug addiction the country has. None of those are health care metrics.

I don't believe there's any credible critic of American health care that premises their complaint on America delivering bad health care. We deliver pretty excellent health care, and we deliver it faster than a lot of countries with better health care outcomes. We are in many places in the US overprovisioned for care (by measurements like empty hospital beds, or overprescription of elective procedures). The chief complaint about American health care is how expensive it is, not how good it is.

That distinction is especially important because getting costs down may involve confronting the ways American care is better than it needs to be or should be. For instance: we do a lot more elective surgeries than countries with better outcomes, in part because we do them outpatient here, and they're inpatient (a much bigger deal) elsewhere. For example, my understanding is you're much more likely to get a hernia repaired (probably needlessly) here than in the UK.