Barr's summary letter on March 24, two days after Mueller delivered his report to the new attorney general, was met with glee from the White House, as he wrote that the lengthy investigation did not find that the Trump campaign "conspired or coordinated with Russian Federation in its efforts to influence the 2016 USA presidential election".
A Justice Department spokeswoman told Fox News on Monday the report would be made available - with redactions - Thursday morning to lawmakers and to the public.
Mr Mueller officially concluded his investigation late last month and submitted the confidential report to Mr Barr.
The report, which runs to almost 400 pages without exhibits, has been the subject of heated debate since Attorney-General William Barr notified lawmakers last month that Mueller had completed his 22-month investigation.
Special counsel Robert Mueller officially concluded his investigation late last month and submitted a almost 400-page confidential report to Attorney General William Barr.
Barr also wrote that Mueller presented evidence "on both sides" about whether Trump obstructed justice, but he did not draw a conclusion one way or the other.
Previously, the DoJ head presented the summarised conclusions of the Mueller investigation, which has found no evidence of collusion between Russian Federation and the Trump campaign during the 2016 election.
"The Mueller Report, which was written by 18 Angry Democrats who also happen to be Trump Haters (and Clinton Supporters), should have focused on the people who SPIED on my 2016 Campaign, and others who fabricated the whole Russia Hoax", Trump wrote.
Hurricane Michael upgraded to Category 5 storm, here's why
PANAMA CITY, FL - OCTOBER 20: A vehicle drives past trees broken by Hurricane Michael on October 20, 2018 in Panama City, Florida. This makes Hurricane Michael the first category 5 to hit the United States since 1992's Hurricane Andrew .
Yemen's Houthis slam Trump veto of anti-war resolution
He also highlighted that the United States was not actively engaged in hostilities, except against al-Qaeda extremists. His murder sparked worldwide condemnation of Saudi Arabia and thrust the Yemen war into the global spotlight.
What's open and closed on Easter Weekend
However, post offices operated by the private sector may be open according to the hours of service of the host business. Grand Hotel Pub: Closed Good Friday, Open Easter Saturday 10am-12am, Easter Sunday and Monday 10am-10pm.
Mueller report to be released Thursday; Barr...
In a bid to head off a legal battle, Barr said during hearings last week that he would work with leaders of the Senate and House Judiciary Committees on providing them more information after the public version of the report is released. Dershowitz asked "why do we have a double standard?" pointing out that he and Democrats were "furious" when former FBI Director James Comey revealed critical information about Hillary Clinton from an investigation into her use of a private email server ahead of the 2016 presidential election despite deciding not to indict the former secretary of state.
First, Barr missed the April 2 deadline to release the Mueller report to Congress, not really giving a good excuse as to why and all the while failing to commit to releasing it ever.
Attorney General William Barr leaves his home in McLean, Va., on Monday, April 15, 2019. As discussed above, the Inspector General is already reviewing the origins of the FBI investigation and the Special Counsel appointment.
Barr is shielding four specific categories of information: grand jury material, details whose public release could harm ongoing investigations, any information that would "potentially compromise sources and methods" in intelligence collection, and anything that would "unduly infringe on the personal privacy and reputational interests of peripheral third parties". The report could provide new information that could prompt further investigations or even consideration of impeachment proceedings, a tricky political calculation, since Mueller did not conclude there was collusion or obstruction.
Two days later, Barr released a four-page summary of the "key findings".
Barr later softened his tone to "I am not saying improper surveillance occurred".
The warrant was obtained after Mr Page left the campaign and was renewed several times.