Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) on Friday accused Attorney General William Barr Bill BarrFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Why a backdoor to encrypted data is detrimental to cybersecurity and data integrity FBI official who worked with Mueller raised doubts about Russia investigation MORE of going "rogue" in his efforts to protect President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE from the fallout over a whistleblower complaint related to Trump's conversations with the president of Ukraine.

During an appearance on MSNBC's "Morning Joe," Pelosi argued that Barr was part of a White House "cover-up" of Trump's call to Ukraine's Volodymyr Zelensky, during which Trump asked Zelensky about the possibility of launching an investigation into former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE.

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"He's gone rogue," Pelosi said. "I think where they're going is a cover-up of a cover-up."

"I think it's sad, to have a Justice Department go so rogue," she continued. "Well, they have been for a while. And now it just makes matters worse."

Speaker Pelosi says on AG Barr: "He's gone rogue ... I think where they are going is the cover up of the cover up, and that's very really sad for them. To have a Justice Department go so rogue ... now it just makes matters worse." pic.twitter.com/l6jhF1UzjJ — MSNBC (@MSNBC) September 27, 2019

The Speaker's comments on MSNBC were her first in a sit-down interview since announcing Tuesday that the House would launch an impeachment inquiry into Trump over his conversations with Zelensky, which Democrats argue show clear evidence that Trump attempted to pressure Ukraine's president into launching an investigation into Biden after speaking about possible military aid to the country.

Republicans and allies of the White House have argued that a readout of the call shows no improper influence exerted by Trump over the issue, and the White House has blasted Democrats for moving to impeachment proceedings over the issue.

More than 220 Democrats in the House say they back an impeachment inquiry, more than the 218 needed to impeach the president.