Have you literally already forgotten that in your quote you stated that the case is known as "In re Grand Jury Hearing"? Would you like me to quote you for you?
Grand Jury hearings, and things that pertain to them, are sealed, and secret. It is not earth shattering to keep the press out of it, because that's exactly how it's always been done.
Dreeben and Ahmed were speculated to be the OSC lawyers present, which makes me think it's Pence that's challenging the subpoena. Ahmed specializes in Middle Eastern graft and that would tie in with the investigation surrounding Trump's inauguration committee.
He ever recover from that coma he was in?
What are you basing that on? Which Grand jury subpoena are you talking about? And most importantly, how is it unrelated to a grand jury case, whose records and proceedings and things pertaining to the aforementioned are secret, and sealed?
Please cite a source.
Spoiler alert: You can't.