Most media have avoided highlighting how Jerry Nadler has not demanded testimony from presumed author of the special counsel report, Robert Mueller. It is likely the Judiciary Committee’s lack of interest surrounds the fact they know Mueller was a figurehead with no substantive control over the small group led by Andrew Weissmann. The special counsel probe, with sunlight upon Mueller, would be a risk to Nadler.
AG Bill Barr has no issue with Mueller testifying; likely because he too knows Mueller appearing for testimony without his “small group” handlers could lead to a full collapse of the special counsel/media narrative. Meanwhile, the White House delivers a response to House Judiciary Committee Chairman Jerry Nadler following his subpoena for former White House Counsel Don McGahn:
WHITE HOUSE – At the President’s direction, the White House has been completely transparent with the Special Counsel’s investigation. The Special Counsel received more than 1.4 million documents and hours and hours of interviews from White House officials, including more than 30 hours from former Counsel to the President, Don McGahn. The Democrats do not like the conclusion of the Mueller investigation – no collusion, no conspiracy, and no obstruction – and want a wasteful and unnecessary do-over.
The House Judiciary Committee has issued a subpoena to try and force Mr. McGahn to testify again. The Department of Justice has provided a legal opinion stating that, based on long-standing, bipartisan, and Constitutional precedent, the former Counsel to the President cannot be forced to give such testimony, and Mr. McGahn has been directed to act accordingly. This action has been taken in order to ensure that future Presidents can effectively execute the responsibilities of the Office of the Presidency. (link)
Formal notification letter (source pdf available here):
Legal guidance from the U.S. Department of Justice, Office of Legal Counsel, below: