I seriously douby it was any coincidence at all this infiltrator's documents had the same last name as a member of the club. As a precaution I would hope they are also now doing thorough checking on the person who shares the name "Zhang".
https://www.wptv.com/news/region-c-palm-beach-county/palm-beach/yujing-zhang-woman-with-chinese-passports-who-was-stopped-inside-mar-a-lago-facing-federal-charges