I remember reading a while back that at some point at the beginning of our time in Afghanistan, at some point we shipped multiple pallets of bundled $100 dollar bills and we had no idea where any of it went
> then distributed the cash with no proper control over who was receiving it and how it was being spent.
> Some of the funds could have enriched both criminals and insurgents fighting the United States.
Literally in the article GP linked. You could argue that we don't know for sure, but the US sends cash around willy nilly that can easily fall in the hands of terrorists while treating Americans like criminals if they have anything above pocket change.
https://www.theguardian.com/world/2007/feb/08/usa.iraq1