Washington (CNN) House Intelligence Chairman Adam Schiff on Wednesday called for William Barr to resign, joining other Hill Democrats who believe the attorney general is biased toward defending the Trump administration and thus can't fairly carry out his duties.

Barr, "in the interest of the department, should step down, but I have no expectation that he will," Schiff, a California Democrat, told CNN's Alisyn Camerota on "New Day," responding to a question about reports that special counsel Robert Mueller expressed concerns to Barr in a letter that the attorney general's four-page summary to Congress didn't fully capture Mueller's report.

Barr testified Wednesday before the Senate Judiciary Committee in a highly anticipated hearing about the Mueller report.

Some Democrats have pushed for Barr to be impeached if he refuses to leave his job as the top Justice Department official.

Schiff said Congress is "having that conversation" whether impeachment is warranted or if it can "conduct the same oversight through a nonimpeachment process."

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