Losing public ownership of presidential papers would be no small problem.

https://freedom.press/the-classifieds/doj-says-presidents-should-be-able-to-sell-secrets-on-ebay/

other discussions
 

Politico notes that the appeals panel hearing our case had deep reservations about the government’s arguments, with Judge Patricia Millett asking: “Can the president then offer on eBay to sell them, all of our national security secrets, to the highest bidder?”

The government’s response was, in short, “yes.”