The PRA makes clear that, upon the conclusion of the President’s term in office, NARA assumes responsibility for the custody, control, preservation of, and access to the records of a President.
44 U.S.C. 2203(g)(1). The PRA makes the legal status of Presidential records clear and unambiguous, providing that the United States reserves and retains “
complete ownership, possession, and control of Presidential records.”
44 U.S.C. 2202. There is no history, practice, or provision in law for presidents to take official records with them when they leave office
So copies of presidential duties and actions belong to the US. I would imagine that anything that is not classified would be available to the public based on FOIA request.
making copies of classified documents does not change anything
Making a copy does not change its status as a presidential record because these records are what he does as president and belongs to the government which would include any copies. unless is is stated specifically that he can make copies to keep somewhere
Personal records can be kept but he or she must sort them before the end of the presidency but it also appears to make it clear that if he or she do not separate the two that they would belong to the government once he or she leaves the building.