A few quick points:
1. All FBI/DOJ can do in one week with 650,000 emails — a number consistent with a full backup of all emails on Huma’s devices since Hillary’s homebrew server was set up Jan. 13, 2009 (the day of Hillary’s SecState confirmation hearing) — is identify those with classified headers — surely thousands.
2. The number of emails copied could only have been copied by preset full automatic backup — given demands on her time as Hillary’s top aide, Huma could not have had time to individually select only unclassified emails to forward, given massive message volume.
3. Needless to say, for at least the five years since he resigned from Congress, Weiner was not even cleared to read a menu at Domino’s Pizza. Even during his seven terms in the House, Weiner would not have gotten automatic security clearances, but only on a need-to-know basis given service on specific committees dealing with classified matters. Thus, Huma had a clear, firm legal obligation to verify that Weiner had the requisite security clearance(s) before forwarding classified emails — whether marked or unmarked, whether already or later classified — to their shared laptop.
4. Content in emails need not be known by Huma or investigators (and can’t be known by the general public, whose members lack security clearance); thus unauthorized transfer by Huma of classified info alone triggers legal liability.