President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE on Tuesday night nominated federal prosecutor Jessie Liu to be associate attorney general, the third-highest position in the Department of Justice (DOJ).

Liu, a U.S. attorney for the District of Columbia, will reportedly monitor the department's anti-trust and civil rights work, as well as defending the government in litigation, including the president's decisions.

The associate attorney general will not play a role in criminal and national security matters and will also not be involved in the process surrounding 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 ongoing probe, according to The Wall Street Journal, which first reported on her nomination Tuesday.

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Liu would replace Rachel Brand, who stepped down last year to take a top legal position at Walmart. Brand said at the time that she would have been "very happy to stay" at DOJ but could not give up the Walmart opportunity. The position has remained vacant since her exit.

"I was pleased to recommend Jessie Liu to President Trump for the position of Associate Attorney General and am grateful that he has nominated her," Attorney General William Barr, who was himself confirmed to lead the Justice Department last month, said in a statement Tuesday.

"Jessie has distinguished herself as a first-class attorney in private practice, in the Treasury Department, and in five different positions over her career at the Department of Justice," Barr said. "Today she leads more than 300 prosecutors at our nation's largest U.S. Attorney office, where she has achieved significant accomplishments, including prosecuting several significant False Claims Act cases and implementing the Department's pilot initiative on sexual harassment in public housing. With her record of public service, particularly in civil justice and federal law enforcement matters, it is clear that she will be an outstanding addition to our leadership team at the Department.”

Trump last month said he would nominate Deputy Transportation Secretary Jeffrey Rosen to be Deputy Attorney General, the second-highest DOJ position.

Rosen will replace Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE, who has announced he will step down.

Liu previously worked for the DOJ under former President George W. Bush.

In her current role as U.S. Attorney, Liu is is jointly prosecuting Roger Stone Roger Jason StoneThe agony of justice Our Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report MORE with Mueller's team. Stone was indicted in January and accused of obstructing a congressional investigation, making false statements, and witness tampering.

On Monday, Liu, along with Mueller, notified Judge Amy Berman Jackson that Stone shared a picture on Instagram that suggested he was framed after Jackson ordered him not to publicly discuss the case.

Updated: 8:08 p.m.