The President is waiting for the Rats to demand a release. Optics. Only question is, will the rats walk into the trap again?
YES, and I get the feeling POTUS KNOWS that Hillary is either running for cover, and making a play seeking more cover by being drafted as a candidate. Perhaps it will be soon, or not, or perhaps at the Democrat Convention next summer.
Therefore we see the State Department is set loose, before she can make her move too obvious and State is fairly *Announcing* an investigation is underway of the Hillary emails.
Kung fuey is everywhere and on both sides.