Their father/husband has been intimately involved in what amounts to a "national scandal" (CBS certainly claims so).
Yet, the family has no confidence in the legitimacy of the documents nor the validity of their contents. The deceased is being used by another party, under what can only be called suspicious circumstances.
I'm thinking that discovery would yield some very interesting findings.
And I'm thinking the family should be investigating their options in this regard.
No. There is no standing for descendents to sue for the defaming of a dead ancestor. Indeed, the claim of defamation is up close and personal. Wrongful death claims for example involves financial hurt and loss of consortium.