WASHINGTON (AP) - President Donald Trump said Monday the release of special counsel Robert Mueller's full report "wouldn't bother me at all" as congressional Democrats clamored for the Justice Department to release the entire document and not just the summary from Attorney General William Barr.

Trump's remarks came as Democrats prepared to huddle behind closed doors Monday evening to plot strategy for their own investigations of obstruction of justice and Russian election interference, among other matters related to the president, following the release of Barr's summary. Barr's four-page document said Mueller did not find that Trump's campaign "conspired or coordinated" with the Russian government to influence the 2016 presidential election - knocking down arguments from Democrats who have claimed there was evidence of such collusion.

But Mueller reached no conclusion on whether Trump obstructed justice, according to Barr's summary, instead setting out "evidence on both sides" of the question and stating that "while this report does not conclude the president committed a crime, it also does not exonerate him." Absent a recommendation from Mueller, Barr stepped in and decided there wasn't sufficient evidence to establish that the president obstructed justice.

While Democrats have said Barr's letter should not be considered the final word on what Mueller found, Trump still claimed total vindication. He said on Monday that "we can never let this happen to another president again." As he has many times before, he suggested the investigation was tainted from the beginning and said it was a "terrible thing."

He even accused those responsible for launching it of "treasonous things against our country" and said they "certainly will be looked into."

Trump has spent months railing against former Justice Department officials, including former FBI Director James Comey, accusing them of an illegal witch hunt for the purpose of delegitimizing his presidency. He has also falsely claimed that the investigation was based on memos compiled by former British spy Christopher Steele, and even blamed former Sen. John McCain, who died last year, for passing the memos to the FBI. But the investigation began months before the FBI ever saw the dossier - and the FBI already had a copy by the time McCain turned it in.

Trump, asked on Monday if he'd be OK with the release of the full report, responded: "Up to the attorney general, but it wouldn't bother me at all."

Republicans followed Trump's lead, with Senate Judiciary Committee Chairman Lindsey Graham promising to "unpack the other side of the story" of the Russia investigation.

Graham, who spent the weekend with Trump in Florida, said his committee will investigate the actions of the Justice Department in the Russia investigation, including the FBI's use of the Steele dossier.

Graham's comments echoed Trump's own complaints Sunday in which he compared the probe to a failed coup and said those behind it should be held responsible. But Graham wouldn't go quite as far, saying he believed that the Mueller investigation was legitimate and had to happen in order to answer questions about Russian interference in the 2016 election.

The South Carolina Republican also had a warning for Trump using his pardon power to help those who were ensnared by Mueller's investigation.

"If President Trump pardoned anybody in his orbit, it would not play well," Graham said.

Among those whom Mueller charged during the course of his investigation were the president's former campaign chairman, Paul Manafort, and his first national security adviser, Michael Flynn. Five Trump aides pleaded guilty and a sixth, longtime confidant Roger Stone, is awaiting trial on charges that he lied to Congress and engaged in witness tampering.

Monday morning, White House aides and allies blanketed television news broadcasts to trumpet Barr's letter and claim that Trump had been the victim in a probe that never should have started. Democrats said they were still waiting for the full report, in addition to the underlying evidence that Mueller used.

"The fact that Special Counsel Mueller's report does not exonerate the president on a charge as serious as obstruction of justice demonstrates how urgent it is that the full report and underlying documentation be made public without any further delay," House Speaker Nancy Pelosi and Senate Democratic Leader Chuck Schumer said in a joint statement Sunday evening. "Given Mr. Barr's public record of bias against the Special Counsel's inquiry, he is not a neutral observer and is not in a position to make objective determinations about the report."

Given the report, Democrats seemed more likely to focus on their ongoing investigations, calls for transparency and frustrations with Barr, rather than engaging with the talk of impeachment that has been amplified on Pelosi's left flank. As the release of Mueller's report loomed, Pelosi recently tried to scuttle that talk by saying she's not for impeachment, for now.

In a joint statement, Nadler, House intelligence committee chairman Adam Schiff, D-Calif., and House Oversight and Reform Committee Chairman Elijah Cummings, D-Md., seemed to concede that collusion had not been found, saying they have confidence in Mueller, "notwithstanding the very public evidence of Trump campaign contact with and willingness to receive support from Russian agents."

Still, they said, "it will be vital for the country and the Congress to evaluate the full body of evidence collected by the special counsel, including all information gathered of a counterintelligence nature."

Ahead of their Monday meetings, Democrats discussed strategy in a flurry of calls over the weekend. Pelosi and Schumer talked repeatedly, including several calls Sunday from her home in San Francisco. As soon as Barr's letter arrived, Pelosi quickly convened a call Sunday with Cummings, Schiff and Nadler to go over its main points. They were on the same page with their response, according to a person familiar with the call. Nadler later held a conference call with Democratic members on the Judiciary panel and reiterated calls for transparency.

People familiar with the calls requested anonymity to discuss them freely.

Republicans unified to call for Congress to move on. "This case is closed," said House Republican Leader Kevin McCarthy in a statement.