The US spends the most in the world on healthcare, by far.

Judged as of 2020-07-05, using the healthcare spending data available then (for example OECD Health Statistics or WHO Global Health Expenditure data for about 2018–2019). True: the US ranks first in the world on total health spending and on per-capita spending or share of GDP, with a large gap to the next country, either well over 10% higher per capita or several GDP percentage points above the next country. Mostly true: the US is first on the main measures, but the gap is moderate, or one measure (for example per capita among very small states) puts it slightly behind. Mixed: the US leads on some standard measures but not on others. Mostly false: the US is near the top but not first on the standard measures. False: the US is clearly not the top spender.

Set before the research began.

1. E1 Americans spend more on health care but die earlier | CNN Politics CNN · 30 January 2020

   “In the US, health care spending accounted for 16.9% of the economy in 2018, nearly twice as much the average developed nation, according to a new study released Thursday by The Commonwealth Fund.”

2. E2 Americans spend more on health care but die earlier | CNN Politics CNN · 30 January 2020

   “Americans spend more than $10,000 per person on health care, more than double the amount shelled out by Australians, Canadians and residents of the United Kingdom.”

3. E3 Americans spend more on health care but die earlier | CNN Politics CNN · 30 January 2020

   “Private health care spending, including premiums for employer-sponsored coverage, drives much of the outlay in the US – with Americans shelling out more than five times more than Canadians, the second-highest spender.”

4. E4 Fact check: Bernie Sanders has made the same false claim about health spending for 10 years WRAL · 9 August 2019

   “The US does spend the highest amount on health care per capita of any Organisation for Economic Co-Operation and Development country, but not double every single one.”

5. E5 Fact check: Bernie Sanders has made the same false claim about health spending for 10 years WRAL · 9 August 2019

   “According to 2018 estimates from the OECD, a primary source of data on health spending for wealthy countries, the US spent $10,586 per person last year. Switzerland ($7,317 per person), Norway ($6,187 per person) and Germany ($5,986 per person) were substantially above half the US level.”

6. E6 Fact check: Bernie Sanders has made the same false claim about health spending for 10 years WRAL · 9 August 2019

   “Those figures use current prices and account for purchasing power. Sanders' claim is also incorrect using other kinds of OECD figures.”

E4 and E5 cite 2018 OECD estimates. They show the US with the highest per-capita health spending of any OECD country, at $10,586 per person, against $7,317 for Switzerland, the next figure cited [E4][E5]. That makes the US about 45% higher, far above the 10% gap the criteria require. E1 reports that US health spending was 16.9% of GDP in 2018, nearly twice the developed-nation average, and E2 says US spending was more than double that of Australia, Canada and the UK. The evidence covers OECD countries rather than every country in the world, but taken together it supports the US being the top spender by a wide margin.