On March 2, 2017, media began reporting that the Senate may call Steele to testify about the Trump dossier.[83]

On March 27, 2017, Senate Judiciary Chairman Chuck Grassley asked the Department of Justice to initiate an inquiry into Fusion GPS, who initially retained Steele to write the dossier.[84] Fusion GPS was previously associated with pro-Russia lobbying activities due to sanctions imposed by the Magnitsky Act.[85]

On August 22, 2017, media reported that Christopher Steele had met with the FBI and had provided them with the names of his sources for the allegations made in the dossier.[86]