A confidential manual, which Unicorn Riot has obtained in full, guides the US Department of Homeland Security’s little-known investigative arm, Homeland Security Investigations, in targeting and stripping citizenship from naturalized foreign-born Americans.This is the first story in Unicorn Riot’s “Icebreaker” series, which aims to promptly release this information in complete form, with your support. An anonymous source provided Unicorn Riot with Homeland Security Investigations Special Agent handbooks covering 22 years of confidential internal federal law enforcement policies.The Denaturalization Investigations Handbook is dated January 15th, 2008 and designated OFFICIAL USE ONLY. It includes information an agent would consult on whether to attempt stripping citizenship, and the intricacies of building up the case against a naturalized citizen.