Sen. Elizabeth Warren Elizabeth WarrenWarren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon No new taxes for the ultra rich — fix bad tax policy instead MORE (D-Mass.) on Wednesday called for Attorney General William Barr Bill BarrBiden rips Barr's comments on coronavirus restrictions as 'sick' OVERNIGHT ENERGY: Cheney asks DOJ to probe environmental groups | Kudlow: 'No sector worse hurt than energy' during pandemic | Trump pledges 'no politics' in Pebble Mine review Cheney asks DOJ to probe environmental groups MORE to resign in light of the Department of Justice's (DOJ) move to ask for a shorter prison sentence for Roger Stone Roger Jason StoneJustice IG investigating Stone sentencing: report Romney says Trump's protest tweets 'clearly intended to further inflame racial tensions' Bannon trial date set in alleged border wall scam MORE, a longtime ally of President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

"Congress must act immediately to rein in our lawless Attorney General," Warren, a 2020 presidential candidate who has previously called for Barr's resignation, said on Twitter. "Barr should resign or face impeachment. And Congress should use spending power to defund the AG’s authority to interfere with anything that affects Trump, his friends, or his elections."

Congress must act immediately to rein in our lawless Attorney General. Barr should resign or face impeachment. And Congress should use spending power to defund the AG’s authority to interfere with anything that affects Trump, his friends, or his elections. — Elizabeth Warren (@ewarren) February 12, 2020

The demand from Warren came just a day after four federal prosecutors arguing the case against Stone resigned en masse ahead of the Justice Department's request for a lighter sentence than the one they had originally proposed.

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The prosecution team on Monday recommended that Stone serve seven to nine years in prison for lying to Congress and witness tampering. The charges stemmed from former special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's investigation into Russia's election interference.

Trump immediately condemned the recommendation, calling it "horrible" and "unfair," and his criticism was followed by reports that DOJ would revise its initial sentencing suggestion. The department later told a federal judge that its initial recommendation did not "accurately reflect" its position and that the judge should impose a sentence of "far less" than seven to nine years.

The Justice Department has denied that it communicated with the White House prior to the revised sentencing recommendation's release.

Trump on Wednesday praised Barr for "taking charge" of Stone's case, saying that it was "totally out of control" and that charges should never have been brought.

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The developments have prompted widespread calls from Democratic lawmakers and former government officials for an investigation. Multiple Senate Democrats have demanded that Barr testify publicly, though Sen. Lindsey Graham Lindsey Olin GrahamThe Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Senate Democrats' campaign arm announces seven-figure investment to boost Graham challenger Graham: Comey to testify about FBI's Russia probe, Mueller declined invitation MORE (R-S.C.) indicated that he would not call him before the Senate Judiciary Committee.

In a series of tweets on Wednesday, Warren placed blame on Republican lawmakers for the recent episode involving potential political interference in Justice Department matters.

"Trump can continue his corrupt rampages and vendettas because elected Republicans do nothing. They lack the courage and backbone shown by four career prosecutors who stepped down rather than facilitate the Attorney General’s corrupt scheme," she said, before calling on Congress to act.

She also cited her plan to create an independent DOJ task force if she's elected president that would investigate alleged crimes by Trump administration officials. She urged other Democratic presidential candidates to commit to a similar plan.

"Trump and Barr’s conduct has no place in our democracy," she said. "To end it, Congress must act — and the American people must hold them accountable in November."

This isn't the first time Barr has faced calls for his resignation since being confirmed as attorney general. Warren and several other Democrats demanded that he step down last May over his handling of Mueller's report on Russia's election interference and possible obstruction of justice by the president.

--Updated at 1:19 p.m.