It's hard to decide who the worst person associated with the Trump campaign is, but you probably can't go wrong if you say it's Musk (who worked illegally under a student visa while not actually enrolled in school and lied to immigration, offenses for which American citizenship can be revoked, which has nothing to do with this story about his weird lottery, but it's always worth mentioning Republican rules-for-thee, not-for-me).
https://www.reuters.com/legal/judge-weighs-challenge-elon-musks-1-million-voter-giveaway-2024-11-04/