"In light of Mueller's letter, the misleading nature of Barr’s 4/10 testimony & 4/18 press conference is even more glaring. Barr must bring the letter with him when he testifies in the Senate tomorrow," Schumer said in a tweet on Tuesday night.

He added that "it's time for Mueller to testify publicly. Now."

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Schumer's tweet comes after The Washington Post reported that the special counsel wrote in a letter that Barr’s March 24 memo did not "capture the context, nature, and substance" of his findings on Russia's election interference and the Trump campaign.

Senate Minority Leader(D-N.Y.) is demanding that Attorney Generalbring a letter from special counselraising concerns about his four-page March memo to a Senate hearing on Wednesday."There is now public confusion about critical aspects of the results of our investigation. 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," Mueller wrote in the letter, according to the Post.