CNN  —  Health and Human Services Secretary Robert F. Kennedy Jr. posted photos Sunday of him and his family swimming in Rock Creek where swimming is not allowed “due to high bacteria levels.” “Mother’s Day hike in Dumbarton Oaks Park with Amaryllis, Bobby, Kick, and Jackson, and a swim with my grandchildren, Bobcat and Cassius in Rock Creek,” Kennedy wrote in a post on X alongside photos including one where Kennedy is completely submerged in the water and others of the secretary playing and