US currency is legal tender for all debts, public and private.
80% of all currency contains trace amounts of cocaine.
Possession of a trace amount of cocaine on currency in your pocket is a felony, regardless of how the cocaine got on the currency.
You are required to use our money, but you are prohibited from using our money. Catch 22. Look, people, that book was satire, not a guide to public policy. Fix the law.
To much of our administrative class, “everyone is an inadvertent felon” is a feature, not a bug.