Democratic leaders swiftly called for the immediate release of the report to Congress and requested a declassified version be made public.
Republican Senate leader Mitch McConnell (Ky.) echoed that call somewhat, saying Barr “needs the time” to review the report, but that he hopes he will provide “as much information as possible” and soon.
“The Attorney General has said he intends to provide as much information as possible,” McConnell said in a statement. “As I have said previously, I sincerely hope he will do so as soon as he can, and with as much openness and transparency as possible.”
Republican Sen. Lindsey Graham (S.C.), chairman of the Senate Judiciary Committee, said that Barr “will pursue as much transparency as possible.”
“I will work with Ranking Member [Dianne] Feinstein and our House Judiciary Committee colleagues to ensure as much transparency as possible, consistent with the law,” Graham tweeted.
“I have always believed it was important that Mr. Mueller be allowed to do his job without interference, and that has been accomplished,” he added.
“Mueller’s report needs to be released to the public ASAP,” Kennedy tweeted. “Americans deserve to know the contents, [and] I trust them to draw their own conclusions.”
“Attorney General Barr should release the report to the public as soon as possible,” Collins echoed.
“The only collusion was between Democrats and many in the media who peddled this lie because they continue to refuse to accept the results of the 2016 election,” the congressman wrote.
And Sen. John Cornyn (R-Texas) tweeted that, with the report’s completion, “what will now follow is mainly political harassment leading to, perhaps, a futile impeachment exercise.”
Corey Lewandowski, who was Trump’s campaign manager in his 2016 presidential run, tweeted: “The Witch Hunt is over!”
“Make the report public,” he wrote. “Millions of taxpayer dollars wasted.”
According to CNN, the Republican National Committee’s talking points on the report’s conclusion include: “It’s good this report has finally concluded.”
Barr, meanwhile, wrote to Congress that he may be able to communicate Mueller’s “principal conclusions” as early as this weekend. He said he was “committed to as much transparency as possible.”
Mueller’s investigation, which took nearly two years, has provoked Trump’s frequent ire and brought down some of the president’s top men.
Mueller’s team has secured the indictment of Trump associate Roger Stone and gotten guilty pleas from former Trump campaign aide George Papadopoulos, former Trump national security adviser Michael Flynn, former Trump campaign chairman Paul Manafort, former Trump campaign deputy Rick Gates and former Trump personal lawyer Michael Cohen.
This article has been updated with more responses from Republicans.