Because a redacted version of the Mueller report was eventually released to the public, we know that Attorney General William Barr lied to Congress when he summarized the report for them.
Another person who knows that Barr lied is Mueller himself who -- according to the Washington Post which first reported the news last night -- wrote a letter to Barr to make it clear that his summary was a lie.
Special counsel Robert S. Mueller III wrote a letter in late March complaining to Attorney General William P. Barr that a four-page memo to Congress describing the principal conclusions of the investigation into President Trump “did not fully capture the context, nature, and substance” of Mueller’s work, according to a copy of the letter reviewed Tuesday by The Washington Post. [...]
At the time Mueller’s letter was sent to Barr on March 27, Barr had days prior announced that Mueller did not find a conspiracy between the Trump campaign and Russian officials seeking to interfere in the 2016 presidential election. In his memo to Congress, Barr also said that Mueller had not reached a conclusion about whether Trump had tried to obstruct justice, but that Barr reviewed the evidence and found it insufficient to support such a charge.
Days after Barr’s announcement, Mueller wrote the previously undisclosed private letter to the Justice Department, laying out his concerns in stark terms that shocked senior Justice Department officials, according to people familiar with the discussions.
Barr's initial announcement and the subsequent summary of Mueller's report that he addressed to Congress were not the only times he lied about Mueller's findings.
Barr also testified in front of Congress and said he didn't know if Mueller disagreed with his assessment of the Mueller report, but we now know that's not true. Barr had already received Mueller's rebuttal before he appeared in front of Congress.
If you had any doubt at all that Barr is politically compromised and in the tank for Trump, this should dispel your doubts.
Barr never should have been confirmed as the attorney general, but his apparent loyalty to Trump is why Senate Republicans confirmed him.
The Republican party only believes in the rule of law if it does not apply to them.
BREAKING: Read Special Counsel Mueller’s letter to AG Barr: "The summary letter ... did not fully capture the context, nature, and substance of the Office's work and conclusions." pic.twitter.com/4IhNTJgKGy
— NBC News (@NBCNews) May 1, 2019