US direct support for communist China was limited (mostly to Dixie mission).
https://en.wikipedia.org/wiki/Dixie_Mission

Too bad US supported wrong China side.
https://thechinaproject.com/2022/07/20/what...g-world-war-ii/

However, at that time, anti-communist fever esp after 1950 was already at brain dead levels. Once label communist, brain stop working.