Title couldn’t say it all.
“The public became aware of these secretive South Dakota trusts when a billionaire couple recently divorced. While they were married, the husband transferred almost all of their assets into a South Dakota trust that she was not made a beneficiary of. The ex-wife is now suing her ex-husband, but the ex-husband's lawyers say the assets are controlled by the trust so they are not marital property.”
This one of the many articles about the divorce:
Transfers made during the marriage into a trust are always reachable; massachusetts the trust becomes a third party defendant.