Headline: Who Is Leonard Leo’s Mysterious Dark Money King?Link: https://newrepublic.com/article/172480/barre-seid-leonard-leo-dark-money-kingPublication Date: Tuesday, May 16, 2023Primary Source: New RepublicNon-Cato Author: Nina BurleighType: articleFormat: Newspaper (Print)Nature of Mention: mentionedScholar: CatoResearch Area: Government and PoliticsSubjects: Barre Seid