His comments risked inflaming Democratic concerns that Barr's views are overly in sync with Trump's and that he's determined to protect the president as he readies the release of a version of Mueller's report.
"As I say, it's hard to have that discussion without the contents of the report, isn't it?" he said.
In excerpts from her opening statement released Monday night, House Appropriations Committee Chairwoman Nita Lowey, D-N.Y., said that Barr's summary letter "raises more questions than it answers". Barr concluded there was not enough evidence to take the case to court.
"Barr said he will deliver the Mueller report to Congress within a week, and it will have color-coded reductions", noted The Tonight Show's Jimmy Fallon.
Though he said the document will be redacted to withhold negative information about peripheral figures in the investigation, Barr said that would not apply to Trump, who is an officeholder and central to the probe.
Labour Party chief says United Kingdom should oppose Assange extradition
Assange's attorneys fear that in case of his handover to the USA , he may face up to 35 years in jail or capital punishment. The sexual assault charges were dropped but Assange refused to leave the embassy, prolonging his self-imposed exile.
The group's lawsuit, filed under the Freedom of Information Act, also argued the public was entitled to see what Mueller said about any attempt by President Donald Trump to obstruct the investigation into Russia's interference. The one possible exception he left open: If the chairmen of the Senate and House Judiciary Committees wanted to see the full report, Barr seems to suggest he would be willing to talk to them about that.
Republicans have repeatedly called for a thorough investigation of the FBI's intelligence practices and the origins of the since-discredited Russian collusion narrative following the conclusion of Special Counsel Robert Mueller's probe - and they now appeared to have assurances that a comprehensive review was underway. Republicans have asked for this investigation now that Mueller has completed his investigation.
The official said Barr's review is separate from the ongoing work being conducted by the Justice Department's inspector general Michael Horowitz, but could not detail its precise scope nor explain how the work of US Attorney John Huber, who was also investigating surveillance matters, factors in at this stage.
Barr's reference to "spying" may refer to a secret surveillance warrant that the Federal Bureau of Investigation obtained in the fall of 2016 to monitor the communications of former Trump campaign aide Carter Page, who has not been charged with any wrongdoing and has denied being a Russian spy.
Barr also revealed that he himself is looking into the conduct of officials who worked the Russian Federation investigation, most of whom have either been fired or left the bureau. The attorney general's explosive testimony marked his Capitol Hill appearance since he revealed the central findings of Mueller's investigation, and he indicated the full report - with redactions - would be made public within the week.