You realize USAID has been a conduit for CIA activities pretty much since its establishment? I mean the hint is the fact its head sits on the National Security Council. Why does a friendly aid organization need a seat at that table?
USAID played a huge role in the Vietnam War by supporting things like “civil defense forces” arming villages against Viet Cong, land reform and “open arms” program to get defectors from the North.
https://www.archives.gov/research/foreign-policy/assistance/...
It had little to do with no strings attached foreign aid. It’s mostly been an arm of US covert activities in other countries (providing cover) and a massive, massive slush fund for the CIA (hence the billions going to “undisclosed recipients”).