I have read the main problem is with countries like North Korea and Iran who produce bills so good that they can only be detected by serial number.
Why wouldn’t North Korea, Iran and anyone else do it? Seriously, why not?
It’s BILLIONs if not virtually unlimited income for them; and the US is too timid, politically correct and cowardly to do anything about it. The current administration is turning a blind-eye to what is basically a declaration of war against us; which is essentially the same thing as encouraging them to continue.
Whereas, if we leveled the factory, the city in which it resides and the capital of the country and said “knock it off, or we will utterly destroy you”, at least they would understand that there are consequences.
When someone declares war against you, giving them BILLIONS in aid, while ignoring their activities does not show strength - it shows a craven weakness.