The House Intelligence Committee is signaling it will soon issue a subpoena to compel the Justice Department to comply with its leaders’ request for 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 full report and underlying evidence.

Committee Chairman Adam Schiff Adam Bennett SchiffPelosi, Democrats unveil bills to rein in alleged White House abuses of power Chris Matthews ripped for complimenting Trump's 'true presidential behavior' on Ginsburg Trump casts doubt on Ginsburg statement, wonders if it was written by Schiff, Pelosi or Schumer MORE (D-Calif.) and ranking member Devin Nunes Devin Gerald NunesOvernight Defense: Stopgap spending measure awaits Senate vote | Trump nominates former Nunes aide for intelligence community watchdog | Trump extends ban on racial discrimination training to contractors, military Trump nominates former Nunes aide to serve as intel community inspector general Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election MORE (R-Calif.) sent two letters to the Justice Department and FBI in March and April requesting all materials obtained or produced by Mueller in the course of his investigation. They also asked for Mueller to testify before the committee.

A House Intelligence Committee aide said Tuesday that the Justice Department has not produced documents or started scheduling testimony in response to the requests and noted that the panel would “soon start the compulsory process since the Department has not even begun to comply.”

ADVERTISEMENT

“The Committee has been engaged for weeks in a good faith effort to secure DOJ's cooperation with the Committee's bipartisan request for documents and testimony,” the aide said. “An accommodations process must go both ways, and the Committee will soon start the compulsory process since the Department has not even begun to comply.”

The Justice Department did not immediately return a request for comment.

In a rare bipartisan effort, Schiff and Nunes sent letters to the Justice Department on March 27 – before the release of Mueller’s redacted report — and again on April 25 asking that the committee be briefed by Mueller and receive all materials produced or obtained by the special counsel during the investigation.

In the April 25 letter, Schiff and Nunes wrote that it was “deeply unfortunate” that the Justice Department and FBI had failed to respond to their original request and reiterated the committee’s need for the documents as part of their oversight of the U.S. intelligence community.

“In addition to the complete unredacted report, the Committee’s request includes all classified and unclassified evidence and information obtained or generated by the Special Counsel’s Office that may relate to foreign intelligence or counterintelligence matters,” Schiff and Nunes wrote 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, Deputy Attorney General 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 and FBI Director Christopher Wray.

“The fact that evidence and information may have been gathered during a criminal investigation, including through grand jury process, in no way diminishes their nature or value as foreign intelligence or counterintelligence information or the Committee’s need for them,” they wrote.

The lawmakers described their request as “unique and distinct” from that of Democrats on the House Judiciary Committee, who have subpoenaed for Mueller’s full, unredacted report and underlying evidence. The Justice Department has thus far not complied with the subpoena.

On April 25, Schiff and Nunes asked that the Justice Department begin cooperating in “good faith” and threatened to begin a compulsory process on May 3 if the department did not comply with their requests beforehand.

The effort is unusual for two lawmakers who have traded barbs over the panel’s investigations into Russia's interference. As chairman, Schiff has opened a new investigation into the possibility the president is compromised by Russia or another foreign power.

Nunes and Republicans, who abruptly shuttered the panel’s original Russia probe last year, are intent on investigating whether FBI agents acted improperly in the early stages of the counterintelligence investigation into links between the Trump campaign and Moscow.

Olivia Beavers contributed.