Besides trump’s dad, Roy Cohn was trump’s mentor in all things ruthless and evil. Anyway, a young Roy Cohn was instrumental in getting the Rosenbergs convicted of espionage and sentenced to death.
The full circle comes now that trump is being investigated under espionage statutes as the Rosenbergs were. (Unfortunately, even if he has already compromised strategy, technology, or sources, trump won’t be executed.) But it is interesting that Roy Cohn was involved in the Rosenberg’s case, was at Joseph McCarthy’s side for the McCarthy hearings, and then became trump’s mentor in how to be as despicable as inhumanly possible, and all that influence helped get trump where he is today - under investigation for espionage.