Judge shuts out public from Mick Mulvaney hearing on House impeachment subpoena

[BumRushDaShow]

2. It may have had to do with his motion to piggy-back onto the Bolton/Kupperman case

because based on his response, that idea appears to have been tossed - i.e., perhaps due to a question of his having standing. From the OP article, it was noted -

About 80 minutes after the hearing began Monday, Mulvaney wrote in a new filing to the court that he now plans to file his own lawsuit over his House subpoena, acknowledging developments in the hearing without giving more explanation of what happened. He said, though, that he believes his case is still related to another impeachment witness who wants the court's intervention -- potentially keeping it before the same federal judge, Richard Leon of the DC District Court.

Almost sounds like he is judge-shopping too.