The report investigated key details on Russia's meddling in the 2016 election and whether President Donald Trump associates conspired with the Kremlin, as well as possible obstruction of justice by the president.
While Mueller drew no conclusion about whether Trump had obstructed justice in the investigation, Barr said he and Deputy Attorney General Rod Rosenstein personally had concluded that while Trump was "frustrated and angered" about the Mueller probe, nothing the president did rose to the level of an "obstruction-of-justice offense".
Leading Democrats in Congress had a very different take on the report. It marks the first time that U.S. citizens and members of Congress will be able to hear from the special counsel directly rather than through the lens of his Department of Justice bosses or the media.
Barr said that none of the redactions were made due to executive privilege, a legal doctrine that allows the president to withhold information from other government branches.
"This press conference is insane".
"Although the deputy attorney general and I disagreed with some of the special counsel's legal theories and felt that some of the episodes examined did not amount to obstruction as a matter of law, we did not rely exclusively on that in making our decision", Barr told reporters.
Trump's 2016 campaign chairman is in the early stages of a 7 1/2-year prison term after being convicted and pleading guilty in two cases linked to financial corruption from his years of lobbying for pro-Russian interests in Ukraine. The investigation did not find evidence that the Trump campaign recovered any such Clinton emails, or that these contacts were part of a coordinated effort between Russian Federation and the Trump campaign.
Barr's news conference ended abruptly after he bristled at the tone of some questions about how he handled the Mueller report.
Notre-Dame cathedral on fire in Paris
Paris deputy mayor Emmanuel Gregoire said emergency services are trying to salvage the famed art pieces stored in the cathedral. Authorities are investigating if renovation work on the cathedral's spire was a factor in starting or spreading the fire.
Barr told reporters on Thursday that he had "no objection to Bob Mueller personally testifying".
I'm f***ed, ' " according to the report by special counsel Robert Mueller that was released Thursday in redacted form.
"As I have already communicated to the Department of Justice, I request your testimony before the Judiciary Committee as soon as possible - but, in any event, no later than May 23, 2019", Nadler wrote in a letter to Mueller.
Even the planned release of the almost 400-page report quickly spiraled into a political battle Wednesday over whether Attorney General William Barr is attempting to shield the president who appointed him and spin the report's findings before the American people can read it and come to their own judgments.
Mr Trump said that his comment during a 2016 political rally asking Russian hackers to help find emails scrubbed from Clinton's private server was made "in jest and sarcastically" and that he did not recall being told during the campaign of any Russian effort to infiltrate or hack computer systems.
What is the Mueller report?
Mueller submitted a almost 400-page report to Barr, whose 4-page summary of the report's "principal conclusions" states that there was no evidence of collusion between the Donald Trump's campaign and the Russian government.
On March 22, Mueller released his report to Trump appointee Barr. The use of a CD drive might indicate that the US Department of Justice is using some ancient equipment, or maybe they just have piles of blank CDs lying around that they're trying to get rid of. Twenty-five of those charged were against Russians accused either in the hacking of Democratic email accounts or of a hidden but powerful social media effort to spread disinformation online. The inquiry led to dozens of indictments, including against Russian nationals and several former members of Trump's coterie, such as his campaign manager and lawyer.