Release appears imminent of a redacted version of special counsel Robert Mueller's almost 400-page report on Russian meddling in the 2016 US presidential election, but sparring over Mueller's conclusions is already rampant.
Two days later, Barr released a four-page summary of the "key findings".
Perhaps the biggest political risk for Trump is the special counsel's supporting evidence behind Mueller's assertion that while the report does not conclude the Republican president committed the crime of obstruction of justice it "also does not exonerate him" on that point.
Democrats in Congress have demanded that Barr provide them with Mueller's full report - and all the evidence behind it. He's said the redacted material will be color-coded to indicate whether it involves classified material, grand jury information or damage to the reputation of a private citizen "peripheral" to the investigation.
Opponents of Trump hope the report will answer longstanding questions about his ties to Russia, including what transpired at a June 2016 meeting at Trump Tower in NY involving his son, Donald Trump Jr, and a Russian lawyer who promised "dirt" on rival Hillary Clinton.
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Barr sparked further controversy in testimony before a Senate panel when he confirmed he was starting his own inquiries into counterintelligence decisions that may have involved "spying" on Trump's 2016 campaign.
The House Judiciary Committee is poised to issue a subpoena for the report's redacted portions. Barr, a Trump appointee, has pledged to be as transparent as possible.
That last category of redaction suggests Barr wants to keep secret any derogatory information gathered by investigators about figures who ended up not being central to Mueller's investigation. The attorney general indicated in his summary that he found no reason to press a criminal charge against the president.
"We know with certainty why they interfered and what they were trying to do but we don't know a lot of details", he said.
U.S. Attorney General William Barr testifies on the Justice Department's budget proposal before a House Appropriations Subcommittee hearing on Capitol Hill in Washington, U.S., April 9, 2019.