Chart is from 2017 but hasn’t changed too much 👇🏻. Foreign is 30% of total & so China is roughly 6% of total ownership of UST.
Don’t forget that Americans own most of US debt👇🏻 (private sector stepping up to replace 📉of foreign buyers

http://www.investmentwatchblog.com/lets-look-at-ownership-of-us-gov-debt/

Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.