Rep. Adam B. Schiff, the ranking Democrat on the House Intelligence Committee, accused Republicans on the committee of trying to discredit special counsel Robert Mueller’s investigation into Russian interference in the 2016 election.

Schiff made the accusation on MSNBC’s “Rachel Maddow Show” Tuesday night after the Washington Examiner reported that the Intelligence Committee subpoenaed the Justice Department and the FBI regarding a dossier that had allegedly salacious details about President Donald Trump.

The letter was signed by House Intelligence Committee Chairman Rep. Devin Nunes, despite having recused himself, The Associated Press reported.

The committee subpoenaed both FBI Director Christopher Wray, who was installed after Trump fired James B. Comey, and Attorney General Jeff Sessions. The committee wants both Wray and Sessions to testify in an open committee hearing.

“Resort to compulsory process was necessary because of DOJ’s and FBI’s insufficient responsiveness to the committee’s numerous Russia-investigation related requests over the past several months,” the letter read.