In a rare show of Russia probe bipartisanship, Intelligence Committee Chairman Adam Schiff (D-CA) and ranking member Rep. Devin Nunes (R-CA) indicated they’re willing to subpoena the Trump administration for the underlying intelligence materials from special counsel Robert Mueller’s investigation, in a letter first reported by Politico and CNN on Tuesday.

The letter — sent to Attorney General Bill Barr, Deputy Attorney General Rod Rosenstein and FBI Director Chris Wray on April 25 — came after a previous request in March by the committee’s leaders to see all of the classified and unclassified evidence related to the counterintelligence aspects of Mueller’s probe.

“It is deeply unfortunate,” the lawmakers said in the April letter, “that the Department and the Bureau failed to respond to the Committee’s March 27 request, including to initiate a dialogue to facilitate the production of this information to the Committee and to schedule associated briefings requested in our letter.”

The April letter gave the Department until May 2 to engage in “good faith” cooperation, before the committee resorted to a “compulsory process” on May 3 to force the production of the requested documents.

A committee aide told TPM Tuesday that, so far, the Justice Department “has not produced any documents responsive to our requests and has not agreed to schedule any testimony.”

The aide said that the committee will start the compulsory process “soon.”

Read the April 25 letter below: