Senate Panel Subpoenas FBI Informant Stefan Halper

Senate Homeland Security and Governmental Affairs Chairman Ron Johnson (R-Wis.) speaks in Washington on Sept. 16, 2020. Manuel Balce Ceneta/AP Photo

A Senate committee chairman issued a subpoena this week to one of the spies the FBI used against Donald Trump’s campaign before the 2016 campaign.

Stefan Halper, 76, was told to appear at the Dirksen Senate Office Building in Washington on Oct. 20.