There are academic researchers have written about this topic: Amy Benjamin: The Many Faces of Secrecy https://ssrn.com/abstract=3038640 https://ssrn.com/abstra

There are academic researchers have written about this topic: Amy Benjamin: The Many Faces of Secrecy https://ssrn.com/abstract=3038640 https://ssrn.com/abstract=3038640 "Political secrecy in the United States has never been more studied – and less understood – than it is today. This irony is due in large part to the slippery nature of the phenomenon: Secrecy presents in different guises depending on the area of governmental activity under consideration. In the classified world of the U.S. national security state, secrecy results from affirmative governmental acts designed to enforce a sharp distinction between official and public knowledge...."