They set up LLCs in Nevis, a tiny island nation that doesn't disclose who owns what business. The filthy rich use these mailbox businesses to buy real estate, and launder money. None of it can be traced back to them.

https://www.theguardian.com/news/2018/jul/12/nevis-how-the-worlds-most-secretive-offshore-haven-refuses-to-clean-up