Primary Outlet: Spectrum NewsBroadcast Date: Thursday, May 6, 2021 - 1:50pmBroadcast Type: interviewBroadcast Format: televisionScholar: Olson, WalterSubjects: vaccine passportsResearch Area: Foreign Policy and National SecurityLink: https://www.cato.org/multimedia/media-highlights-tv/walter-olson-discusses-vacci…