Here is some info as to some people having their bank accounts cancelled for seemingly unfair reasons.

https://news.yahoo.com/why-banks-suddenly-closing-down-155511987.html?fr=sycsrp_catchall

Also be careful if you carry large amounts of cash travelling to or from a casino if you play poker, baccarat,   sports betting etc etc etc    and you get stopped by police for speeding in a car or are in an airport ....it is possible the police can confiscate all your cash and, hiring a lawyer may cost more than  the cash you lost.

https://truthout.org/articles/police-are-abusing-civil-forfeiture-laws-to-seize-cash-for-themselves/