The committee also approved issuing a subpoena for Steven Somma, an FBI counterintelligence investigator who served as Halper’s handling agent. A Justice Department inspector general’s report released on Dec. 9 faulted Somma for numerous errors during Crossfire Hurricane.
The Senate committee voted in June to issue subpoenas for 35 people on Johnson’s witness wish list, but Democrats raised a procedural issue that required a new vote on Wednesday. (RELATED: GOP Senator Seeks Subpoena For ‘Spygate’ Professor)
Michigan Sen. Gary Peters, the top Democrat on HSAGC, voiced his opposition to the subpoenas ahead of the vote on Wednesday. He accused Johnson of leading a politically-motivated investigation aimed at helping President Donald Trump.
Johnson has sought interviews with former FBI officials who led Crossfire Hurricane, including James Comey, Andrew McCabe, James Baker, Peter Strzok and Lisa Page.
He is also seeking depositions for former CIA Director John Brennan and former Director of National Intelligence James Clapper.
Also on the list are Cody Shearer and Sidney Blumenthal, two longtime Clinton allies who circulated a dossier that accused Donald Trump of illicit sex acts in Russia. The allegations are similar to those in the dossier by former British spy Christopher Steele.
Jonathan Winer, a former State Department official, obtained the so-called Shearer dossier from Blumenthal, and in turn shared it with Steele. Steele passed the report to the FBI.
Johnson also plans to subpoena Winer as part of his investigation.