Except perhaps if you challenge former CIA Director John Brennan.
Poor lil John, he is trying to write a book and wants access to some of his CIA files and notes. That request has been denied. His book titled Undaunted: My Fight Against America’s Enemies, at Home and Abroad, slated for release in October may not have some citations or chapters in it because he has been denied access to classified material. President Trump and his security clearance was apparently never revoked. Hummm.