I used to work for the company that makes the US currency paper, this girl is right. However there are some caveats.
Outside the US most of the counterfited currency is in denominations of 100.00$ US, in the US however the bills tend to be smaller, 5-10$ US.
There used to be an issue with 50.00$ US Bills being counterfited, however with those not in circulation as much they are easier to identify.
Outside the US you are more likely to run into counterfit bills than in the US. Still the Treasury reports total global counterfits, if I remember correctly, at being less than 1% of total outstanding currency.
don’t china use polymer notes? If counterfiet were made, then its a serious issue. Polymer notes are alot harder to copy than paper ones. It require national state production facilities to make them
I have read that it is very difficult for counterfeiters to reproduce the look and feel of the Crane paper used in American currency. Is that correct?