Barr said that Mueller "thoroughly" investigated the question of whether the Trump campaign coordinated with Russia's election interference, issuing more than 2,800 subpoenas, obtaining almost 500 search warrants and interviewing 500 witnesses.
Rep. Jim Jordan has yet to see the special counsel's report on the Russian Federation investigation, but the Ohio Republican insists it shows no evidence of "coordination, collusion, conspiracy between the Trump campaign and Russian Federation". "It was a complete and total exoneration", Trump said.
For their part, Democrats called for Mueller's full report to be released and vowed to press on with their own investigation, setting up future clashes with the White House.
They also said Attorney General Bill Barr, nominated just months ago by Trump, is "not a neutral observer" in the process and that his summary of the report, delivered to Congress earlier, is not an objective determination about Mueller's findings.
The probe illuminated Russia's assault on the American political system, painted the Trump campaign as eager to exploit the release of hacked Democratic emails to hurt Democrat Hillary Clinton and exposed lies by Trump aides aimed at covering up their Russia-related contacts.
Trump's business, his charity and presidential transition operation remain under investigation, said Sen. It was a moment of triumph for Trump, who has always been targeted over the matter.
Over the course of his probe, Mueller has indicted more than three dozen people and entities on various charges.
Barr claimed in his letter that Mueller's decision against reaching any legal conclusions "leaves it to the Attorney General to determine whether the conduct described in the report constitutes a crime".
"Seems like the Department of Justice is putting matters squarely in Congress' court", tweeted Democratic Representative Jerry Nadler, the chairman of the House Judiciary Committee.
The Department of Justice announced on Friday that Mueller had ended his investigation after bringing charges against 34 people, including Russian agents and former key allies of Trump, such as his campaign chairman Paul Manafort, former national security adviser Mike Flynn and his personal lawyer Michael Cohen. In addition to investigating Russian election interference, Mueller also investigated whether Trump - who fired former FBI Director James Comey after he refused to pledge loyalty to the president and who reportedly tried to fire Mueller - obstructed justice by working to interfere with the special counsel's probe.
Mueller "clearly and explicitly is not exonerating the President, said Rep".
"There must be full transparency in what Special Counsel Mueller uncovered to not exonerate the President from wrongdoing".
Republican Senate Majority Leader Mitch McConnell said he hopes that Barr will "provide as much information as possible" on the findings, "with as much openness and transparency as possible".
The special counsel set out evidence on both sides in his report, leaving it to Mr Barr to make the decision.