Article continues below advertisementRobert F. Kennedy Jr.'s attempt to change vaccine policies, including reducing the recommended childhood immunizations, was squashed by a federal judge.The ruling on Monday, March 16 comes after the American Academy of Pediatrics (AAP) and other medical groups filed a lawsuit against the U.S. Department of Health and Human Services (HHS), alleging Kennedy's agenda, which also included an overhaul of a vaccine advisory committee, violated violated federal law.