I don't think you could do that at any scale and escape the wrath of the US. That runs afoul of most money laundering regulations, so if you have any presence

I don't think you could do that at any scale and escape the wrath of the US. That runs afoul of most money laundering regulations, so if you have any presence in the US they'll go after you, and they'll prosecute anyone with any serious connection to it and extradite those people to the US where possible. Moving money across international borders is not a problem you can just engineer around. You have to play by the rules.