The vote will happen on June 4th and soon after Graham will start the investigatory hearings into the Obama administration's spying on the 2016 Trump campaign.
Senate Judiciary Committee Chairman Lindsey Graham moved to gain subpoena authorization for a number of former Obama administration officials Monday evening.
"Senate Judiciary Committee Chairman Lindsey Graham (R-South Carolina) today announced that the Committee would debate and vote on a subpoena authorization related to the FISA abuse investigation and oversight of the Crossfire Hurricane investigation," Graham's office released in a statement. "Graham’s subpoena authorization covers a number of documents, communications and testimony from witnesses, including James Comey, Andrew McCabe, James Clapper, John Brennan, Sally Yates, and others."
According to Committee rules, Graham must receive subpoena authorization approval from Ranking Member Dianne Feinstein or through a full vote from members. Once approved through one of these avenues, Graham can officially issue subpoenas to individuals he wants to testify. Democrats authorized subpoena power by party line vote in 2008 under then Chairman Patrick Leahy.
His authorization, if approved, will include the ability to subpoena the following individuals (bolding is mine). The list includes individuals who worked for Fusion GPS and authored the bogus Russian dossier about President Trump. That dossier was used by the FBI to investigate the Trump administration.