evidence: With a few exceptions, highly classified materials — including top secret documents and information gleaned from intelligence sources — are never supposed to leave a SCIF. [...] The rules for handling classified information are different for sitting presidents. They’re free to review top secret materials outside of a SCIF, but even then, they usually do so in the presence of a senior official such as the national security adviser, who is responsible for retrieving the documents and securing them afterward. [...] McCord transported sensitive materials home in a special locked bag. At home, she had a government-installed safe behind a deadbolt. But still, she could only take certain classified documents home — nothing past the secret level — and had to complete some tasks in the more protected SCIF at the Justice Department’s headquarters.