My understanding of the US legal system (I'm British) is that stockpiling cash isn't a crime, irrespective of the amount. Sure, sleeping on a mattress made of

My understanding of the US legal system (I'm British) is that stockpiling cash isn't a crime, irrespective of the amount. Sure, sleeping on a mattress made of $100 bills might raise suspicion.. but that's still not a crime. If the government suspect you haven't paid your taxes, the burden is still on them to prove you didn't pay your taxes. If they have any evidence to bring this to a court, it would need to pass the threshold of actually being evidence of absent tax payments, it is not enough to say "They are sleeping on a bed of benjamins, your honor." I'm well aware this is ignoring how hilariously broken actual legal proceedings are, of course, thus scenarios like the one that started this thread.