Rep. Jerrold Nadler (D-N.Y.), the chairman of the House Judiciary Committee, said on Monday that 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 should testify in front of the committee.

Nadler's call for Mueller to testify before the committee comes after Rep. Doug Collins (R-Ga.), the top Republican on the committee, urged Nadler earlier on Monday to have Mueller testify.

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"Today, Ranking Member Collins called for Special Counsel Mueller to appear before @HouseJudiciary. I fully agree," Nadler said in a tweet. "Special Counsel Mueller should come before the Committee to answer questions in public about his 22 month investigation into 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 and his associates."

Today, Ranking Member Collins called for Special Counsel Mueller to appear before @HouseJudiciary. I fully agree. Special Counsel Mueller should come before the Committee to answer questions in public about his 22 month investigation into President Trump and his associates. 1/2 — (((Rep. Nadler))) (@RepJerryNadler) April 8, 2019

"In order to ask Special Counsel Mueller the right questions, the Committee must receive the Special Counsel’s full report and hear from Attorney General Barr about that report on May 2. We look forward to hearing from Mr. Mueller at the appropriate time," Nadler added.

But Collins said in a letter earlier Monday that Mueller should testify during the week of April 22, something he said would help with transparency.

"To that end, Special Counsel Mueller should be invited to testify before the Committee during the week of April 22. Although the House is expected to be in recess that week, I think we can agree this business is too important to wait, and Members of the Committee will surely return to Washington at such a critical moment in our country’s history," he wrote.

Mueller, who investigated Russian interference in the 2016 election, submitted his final report last month to Barr.

Barr summarized Mueller's report in a letter last month to lawmakers, saying Mueller did not uncover evidence to conclude that a conspiracy took place between the Trump campaign and Russia. Mueller did not decide whether Trump obstructed justice, but Barr and Deputy Attorney General Rod Rosenstein said there was not enough evidence to charge President Trump with that crime.

Democrats have called on Barr to share the full, unredacted report with Congress and voted last week to authorize a subpoena for the report.

Updated at 3:53 p.m.