Democrats are telling Attorney General William Barr to resign following news reports indicating that the special counsel Robert Mueller had misgivings about Barr's characterization of Mueller's report on the Russia investigation.

Mueller reportedly wrote a letter saying Barr and his four-page summary of the Russia investigation "did not fully capture the context, nature, and substance of this office's work and conclusions."

Barr concluded in his summary that President Donald Trump did not obstruct justice, but he did not detail the numerous potential examples of obstruction Mueller had provided.

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Democrats are incensed at Attorney General William Barr following news reports indicating that the special counsel Robert Mueller had misgivings about Barr's characterization of Mueller's Russia investigation.

On Tuesday, The New York Times first reported that the special counsel wrote to Barr in late March saying he disagreed with the attorney general's public summary of Mueller's nearly two-year investigation.

Days after Barr submitted his "principal conclusions" on the investigation, Mueller wrote a letter saying Barr "did not fully capture the context, nature, and substance of this office's work and conclusions," according to The Washington Post.

"There is now public confusion about critical aspects of the results of our investigation," the letter said, according to The Post. "This threatens to undermine a central purpose for which the Department appointed the Special Counsel: to assure full public confidence in the outcome of the investigations."

Read more: Video shows William Barr denying knowledge of Mueller's objections to his summary of the Russia probe days after Mueller sent him a letter about it

In March, Barr summarized Mueller's 448-page report with a four-page letter. In the summary, Barr deduced that the special counsel could not prove a conspiracy between members of Donald Trump's 2016 presidential campaign and Russia.

Barr also concluded in the summary that Trump did not obstruct justice — though he did not detail numerous potential examples of obstruction that Mueller uncovered. He also did not fully describe Mueller's rationale in declining to issue a judgment on obstruction.

Following the reports of Mueller's frustration, Democratic lawmakers have amped their calls for Barr to resign. Here's what they had to say: