This isn’t primarily the US, this is global extreme poverty, and right now for example, it’s bad in Southern Asia, and sub-Saharan Africa, among one or two other places the UN & World Bank talk about.

> w/o also numbers on what it cost to live per day.

This is what “PPP” is all about, that’s referring to a normalized purchasing power parity that is specifically designed to help you understand what $7/day actually means: it means what you think it does, and it is supposed to compare directly to the amount of money it costs you to feed yourself every day.

https://en.wikipedia.org/wiki/Purchasing_power_parity