Earlier quoted context omitted.
In Canada, and I think the US we cannot cross the border with > 10k in cash (edit: more if you declare it as mentioned below). The law has been there for as long as I can remember, be I sure purchasing power of 10k has gone down by at least a factor of 4-10 over the life of the law. All regulation type laws need sunset clauses and all dollar amounts should be inflation linked. The government shouldn't be able to scam…
I think the law technically states that you have to declare, if you have more cash. It's not directly forbidden, is it?
https://moneyweek.com/33401/why-its-now-illegal-to-melt-down...
https://www.federalregister.gov/documents/2007/04/16/E7-7088...