No.
However, there is such a thing as bearer bonds.
These are no longer issued because of their use in money laundering. What bonds are outstanding are difficult to get. Transactions regarding them tend to be scrutinized, and they can only be purchased with a full set of credentials.
Buying a bunch of these is about as subtle as wearing a ski mask into a bank, and a great way for for our little smuggler to demonstrate that trying to imitate what he sees in the movies is a great way to get an all-expense paid vacation at a Federal facility.
And wishbone, that tactic would still leave our collector having completed two or more highly suspicious and unusual transactions and with a pile of stamps worth 15 cents on the dollar.
If Manhattan gives permission and trusts in my discretion I’ll discuss the 3 or so basic ways money-laundering is accomplished today.
IMO, general knowledge of how this is attempted is the best way to prevent its occurence, and it’s certainly the stance embraced by the SEC and Federal Banking Committee to quell it (with excellent success, I might add.)
Of course I’ll respect Mod wishes in this.
If it’s much interest I’d offer to do a staff report as I’m knowledgeable in this area, or email my posts for Mod editing prior to posting.