The subpoena was served on Columbia law professor Daniel Richman, a close friend of Comey’s who has been accused of serving as his conduit for leaks to the media. He was later found by the Inspector General to have removed FBI material when he left the bureau related to Trump and the Russian investigation. The respected veteran investigative reporter Catherine Herridge reported on a June 2017 memorandum that documented a phone call with Richman and the so-called “Comey memos,” which detailed his conversations with President Trump. He is now under investigation again, and the subpoena for his friend, Richman, can only be viewed as ominous. For Richman, a subpoena carries increased risks because he has previously spoken to both the media and investigators.