The USA government is the only issuer of USA Dollars. Who is lending money to the US? Why the Chinese (for instance, now that they are fashionable) buy USA deb

The USA government is the only issuer of USA Dollars. Who is lending money to the US? Why the Chinese (for instance, now that they are fashionable) buy USA debt? Because they have a lot of dollars from selling things to the USA, so, instead of having those dollars in a checking account, they buy bonds that give them interest. Recommended talk: https://www.youtube.com/watch?v=WS9nP-BKa3M&t=1s https://www.youtube.com/watch?v=WS9nP-BKa3M&t=1s