Special counsel appears to be locked in a dispute with a mystery grand jury witness: Update

[hlthe2b]

BREAKING: D.C. Circuit just announced that the Dec. 14 oral argument in the mystery grand jury witness case POLITICO reported on will take place in CLOSED SESSION.

Hmmm....

Previous: Mueller link seen in mystery grand jury appeal

The special counsel appears to be locked in a dispute with a mystery grand jury witness, but much of the case is sealed.
https://www.politico.com/story/2018/10/24/mueller-investigation-grand-jury-roger-stone-friend-938572

Update:

Link to tweet

[leftynyc]

1. My guess is jarad, junior or donnie himself (n/t)

[Happyhippychick]

2. Jared is a distinct possibility

[RockRaven]

3. Can't be Dotard, he would have let something slip on twitter by now

or so I would have thought... Maybe Jared or Stone?

[blogslut]

4. I'm guessing Don McGahn

I know he already submitted to questioning with Special Counsel but, I don't know anything about teh law so there.

Oh! Oh! Strike that! My new guess: Jeff Sessions!

[Fiendish Thingy]

5. Isn't one of Roger Stone's underlings refusing to testify

And refusing to recognize the authority of the Special Counsel?

[hlthe2b]

6. yes, but that hasn't been secret...(Andrew Miller)

https://abcnews.go.com/Politics/mueller-maintains-trumps-controversial-doj-pick-effect-special/story?id=59303326

Prior:
https://www.washingtonpost.com/world/national-security/witness-in-mueller-probe-refuses-to-appear-before-grand-jury/2018/08/10/73e27130-9ca4-11e8-843b-36e177f3081c_story.html?utm_term=.b3dd6991c798

[intheozone]

7. Could it be Sessions??? nt