I’d question how the family may be hiding or shielding the booty
Having seen this in my family, I suspect they looted the man before he died.
For example, the apartment in the Dominican Republic could have been signed over to the daughter before he died via a quitclaim deed, I don’t know about property rights being transferred in the Dominican Republic, but that happened in my case.
Then you put everything else in a trust, name one person as 100% beneficiary of the trust when the person dies and effectively at that point, everything Charles Rangel had is now in the hands of someone else.
TRUST===NO PROBATE