Biased article and meaningless. The fact is that Clinton was allowed to call classified information "personal" and yet Trump is not allowed to. FFS, The whole PRA came about because of Nixon trying to get rid of "personal" records.
No, Clinton was allowed to call HIS tapes his own, he CREATED them so he owned them - a pentagon document on Iran is NOT Trump's personal document.
If a President can call any document as personal, then there is nothing secret, he can publish nuclear codes and say its his personal code.
That's not how any of this works.