President John F. Kennedy’s grandson Jack Schlossberg — who is running for Congress in New York — doubled down on criticizing his cousin, Health and Human Services (HHS) Secretary Robert F. Kennedy Jr., on Tuesday and called the Trump cabinet official “dangerous.” “Tell us what you think about your cousin, the Secretary of Health, and his position on vaccines that many of these children will not receive,” asked Mike Barnicle, a regular guest on MS NOW’s “Morning Joe.” Schlossberg said RFK Jr.