Rosenstein was part of the BLOCKADE as well, remember at one point congress spoke of impeaching [RR] cause he kept blocking the release of documents the house judiciary had requested.
In the 178-page court document, DOJ officials said they had “determined that disclosure of redacted information in the Carter Page FISA documents could reasonably be expected to interfere with the pending investigation into Russian election interference.”
That rationale has heightened suspicions among congressional investigators that the special counsel is being used to prevent the disclosure of possible FBI abuses and crimes committed during the Russia probe. Opened by the FBI in July 2016, the Russia investigation was taken over by Mueller when Deputy Attorney General Rod Rosenstein appointed him special counsel in 2017.
Rosenstein’s leverage may explain why Trump has resisted the calls of congressional Republicans and other allies who believe he can clear his name by unveiling evidence of abuses and possible crimes committed during the Russia probe.
A non-nefarious reason the DoJ didn’t give congress documents was because of leakers, and targets of investigations knowing what was going on. RR is deputy, certainly Sessions, Whitaker, and now Barr, could overrule RR, I would assume.