A friend say….
"Release of findings
The full release of the Mueller findings to Congress and the public is not assured. Justice Department regulations require a special counsel to confidentially provide the current attorney general with a report of findings. The attorney general, in this case Bill Barr, is then required to provide a summary of the findings to Congress, although he has considerable discretion in how much detail he provides. With some previous high-profile exceptions, DOJ policy has been to withhold derogatory information about individuals who have not been charged with crimes, and since DOJ guidelines state a sitting president cannot be indicted, Barr could withhold any damning information about Trump. Should Congress be dissatisfied with the summary it is provided, it could subpoena Mueller's full report. Congress could also call Mueller to testify. Neal Katyal, who wrote the special counsel rules in 1999, stated, “The special counsel regulations grapple with how to police high-level executive branch wrongdoing. If a sitting president can’t be indicted, then Congress must decide whether it must act, and it would need more information from Mr. Barr to make that decision." House Intelligence Committee chairman Adam Schiff stated in February 2019 that he was prepared to subpoena the full Mueller report and perhaps sue the DOJ should Barr not be fully forthcoming with Mueller's findings, adding “The Justice Department cannot take the position that a sitting president can’t be indicted, and at the same time withhold evidence of any wrongdoing. That would amount to immunity.”