We ain't never been in this scenario before, breh. I have no idea.
Presidential Records Act (PRA) of 1978
The Presidential Records Act (PRA) of 1978, 44 U.S.C. ß2201-2209, governs the official records of Presidents and Vice Presidents that were created or received after January 20, 1981 (i.e., beginning with the Reagan Administration). The PRA changed the legal ownership of the official records of...
www.archives.gov
I think they'll try to hit him with this to kill any chance of him running for office. They created this law after Nixon/Watergate, and anyone who violates it can never run for a government position again.