Mueller's investigation brought charges against 34 people, including Russian agents and former key allies of Trump, such as campaign chairman Paul Manafort, former security adviser Mike Flynn and his personal lawyer Michael Cohen.
"The report does not recommend any further indictments nor did the special counsel obtain any sealed indictments that have yet to be made public", Mr Barr said in his letter to the heads of the Senate and House judiciary committees.
It was not known what Mueller's report says about another key point: whether Trump committed obstruction of justice to hinder the Russian Federation investigation by acts such as firing FBI Director James Comey in 2017.
But the final report by Special Counsel Robert Mueller left unresolved allegations that Trump obstructed justice in his attacks on the probe.
House Speaker Nancy Pelosi of Calif., speaks at an Economic Club of Washington luncheon gathering in Washington, March 8, 2019.
The Justice Department summary sets up a battle between Barr and Democrats, who called for Mueller's full report to be released and vowed to press on with their own investigation.
Barr's letter marked the conclusion of the disturbing investigation into allegations that Trump's election campaign coordinated and colluded with Russians to skew the 2016 vote so the billionaire real estate magnate would win. The US president has managed to make the American public numb with a series of never-ending scandals, big and small.
"It was complete and total exoneration", Trump told reporters in Florida before returning to Washington Sunday afternoon. He claimed the allegations of collusion with Russian Federation were, "an illegal takedown that failed". Trump refused to be questioned in person and instead answered written questions.
Trump's legal team said the president was completely vindicated.
"While Mueller's investigators uncovered evidence of Russian meddling in the USA election, "[the] investigation did not establish that members of the Trump campaign conspired or coordinated with the Russian government in its election interference activities", the summary quotes Mueller as writing.
Democratic and Republican lawmakers disagree about whether no criminal charges meant there was no cooperation between the Trump campaign and Moscow. They found there wasn't enough evidence to prove Trump had committed that crime. "There was really an affirmative "No" said Eric Jaso, a former associate special counsel for the Whitewater affair during former President Bill Clinton's administration."If they'd gone along and said yes, that would have fallen under the tacit agreement category".
Iraq ferry sinking: 'More than 70 dead' in Tigris river
The Tigris river is usually tame but is running high this time of year, due to snowmelt from mountains in Turkey. Abdulrazzaq Falih, a rescuer with the river police of Mosul, said he pulled more than 20 bodies from the water.
The president struck a victorious tone even though the report states that he was not cleared on the question of obstruction of justice. Trump has always denied collaborating with Moscow or obstructing justice and Russian Federation says it did not interfere in the election.
Democrats are reminding that the House voted almost unanimously, 420-0, to release the full Mueller report, which they say is more important not than ever.
"AG Barr and DAG Rosenstein further determined there was no obstruction".
Barr's memo drew criticism from congressional Democrats, who questioned Barr's impartiality.
US Representative Jerrold Nadler, Democratic chairman of the House Judiciary Committee, said it "seems like the Department of Justice is putting matters squarely in Congress' court".
Neither Mueller nor Barr actually said that.
Most of the information pertaining to the surveillance remained inaccessible because the surveillance of Page was part of the FBI's investigation of the Trump campaign, which eventually morphed into the special counsel probe.
But their claim of "total exoneration" was not supported by Mueller's report.
But Barr's summary says the Special Counsel does not recommend any additional indictments in his report and says that there are no indictments under seal that have yet to be made public. "[Mueller's] words are very different than Barr's, I suspect". That left it to the attorney general to decide.
President Trump fired then-FBI director Comey in May 2017.
So now, regardless of what details the Mueller report holds, Trump can sell it as a victory and claim that "look I always said it, it was all just a witch hunt, an illegal campaign to remove me from office".