In my country and my bank, any deposit on my account (doesnt matter if local or international) above 20k USD means the bank will call you on phone and ask from whom and for what did you receive that money (already valid anti money laundering law). The payment is also likely to be sent to officials to check.
Really, in the US it's been a red flag for years now due to suspicion of drug money mostly and money laundering to deposit cash over $10,000. Your bank account will be tagged and you'll def need to answer as to where the money came from regardless of crytocurrency which has nothing to do with it. That is one of the reasons however that the amount that can be invested, fiat exchanged into crypto, is being regulated by more than one government already, to thwart criminal activity by cashing in money gained in illegal activities through crypto exhanges or hodling as BTC rather than using a bank, which is difficult to do with large quantities of cash.