Two House Democrats have sent a letter to bar associations in Washington, D.C., and Virginia asking them to open an ethics investigation into 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.

Democratic Reps. Ted Lieu Ted W. LieuThe spin on Woodward's tapes reveals the hypocrisy of Democrats Larry Kudlow defends response to coronavirus: Trump 'led wisely' Lieu on Trump 'playing it down' on coronavirus: 'This is reckless homicide' MORE (Calif.) and Kathleen Rice Kathleen Maura RiceHillicon Valley: Simulated cyberattack success | New bill for election security funding | Amazon could be liable for defective products Lawmakers introduce bill to help election officials address cyber vulnerabilities House lawmakers to launch probe into DHS excluding NY from Trusted Traveler Program MORE (N.Y.) wrote to the associations on Thursday, a day after Barr's contentious hearing on Capitol Hill during which he defended his 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.

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"By deceiving Congress and the American people, who vested their trust in both the Office of the Attorney General and the Department of Justice at large, Attorney General Barr must be subject to a professional review for the sake of the legal profession and the public," the lawmakers wrote.

Lieu and Rice, who are both former prosecutors, invoked rules that prohibit obstruction of another party’s access to evidence, making a false statement to a tribunal and engaging in dishonesty or misrepresentation that reflect adversely on a lawyer’s fitness to practice law.

The Democrats referenced in their letter to the D.C. and Virginia bar associations the attorney general's handling of the Mueller report. Barr has come under fire from Democrats in recent days after it was revealed that Mueller had written to him expressing concerns that the attorney general's four-page memo to Congress in late March summarizing the probe's principal findings lacked vital context.

At best AG Barr misled the public. At worst he perjured himself before Congress. We shouldn’t accept that from any attorney, let alone our top law enforcement official.@tedlieu and I have asked the Virginia & DC Bar associations to open an investigation into his conduct. pic.twitter.com/X7RQMJnM6b — Kathleen Rice (@RepKathleenRice) May 3, 2019

In the letter dated March 27, three days after Barr sent a summary of the report to Congress, Mueller accused the attorney general of creating "public confusion about critical aspects of the results."

Lawmakers grilled Barr over the letter during his appearance before the Senate Judiciary Committee on Wednesday. The attorney general defended his handling of the report, including his decision to not pursue an obstruction of justice charge against the president.

The Hill has reached out to the Justice Department and both bar associations for comment.