President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Wednesday accused Sen. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.) of being "probably very nasty" to Attorney General William Barr Bill BarrHarris faces pivotal moment with Supreme Court battle Hillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE during his testimony to the Senate Judiciary Committee.

Trump told Fox Business's Trish Regan that Harris and other lawmakers who are running for president were hard on Barr during the hearing for "political points."

"She was probably very nasty," he said of Harris, who grilled Barr on a number of points related to Barr's handling of 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 report on his investigation into Russian interference in the 2016 election.

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While being questioned by Harris, Barr said that he did not look at the underlying evidence in Mueller's report before deciding not to pursue an obstruction of justice charge against Trump.

This is the second time in less than a week that Trump has referred to Harris as "nasty." Speaking to Fox News's Sean Hannity last week, Trump said the California Democrat has "a little bit of a nasty wit, but that might be it."

Harris, responding to the comment on Thursday morning, said "God only knows" why Trump uses that word.

"We have a president of the United States whose primary interest ... has been to obstruct justice," she told CNN. "My primary interest is to pursue justice. You can call that anything you want, but I think that's what the American people want in a leader."

.@KamalaHarris: “Trump’s primary interest has been to obstruct justice. My primary interest is to pursue justice. You can call that whatever name you want, but I think that's what the American people want in a leader.”



pic.twitter.com/rzNcTU7cq8 — Kirsten Allen (@knicole_a) May 2, 2019

In his comments Wednesday evening, the president also slammed the Democrats on the Senate Judiciary Committee who are running against him for president, saying they were "ranting and raving like lunatics" at the hearing.

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"You have Bill Barr, highly respected, great attorney general, and he's got to take the abuse from people that are running for office," he said while appearing on Fox Business. "They don't care about this. They're just looking for political points."

He also slammed calls for Barr's resignation as "so ridiculous."

Barr on Wednesday testified before the Senate Judiciary Committee, the day after committee Democrats released a letter Mueller wrote to Barr criticizing Barr's characterization of the report.

Mueller's letter, dated March 27, said Barr's summary of the report from three days prior created "public confusion about critical aspects of the results of our investigation."

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Weeks after Barr sent his summary of the findings to Congress, the Justice Department released a redacted version of Mueller's report.

Three Democrats who are running for president in 2020 — Harris, Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.) and Sen. Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.) — sit on the Judiciary Committee. Booker and Harris were among a group of 2020 candidates who on Tuesday and Wednesday called for Barr to resign.

Updated May 2 at 10 a.m.