On March 16, US federal judge Brian Murphy of Massachusetts blocked controversial reforms to the national vaccination policy for children proposed by Secretary of Health Robert F. Kennedy Jr. The judge noted that the plaintiffs are likely to succeed in proving that key parts of these changes are illegal. The decision suspends the new Federal Advisory Committee on Immunization Practices (ACIP) and changes aimed at reducing routine childhood vaccinations while the case continues. The lawsuit was filed by the American Academy of Pediatrics (AAP) and other medical groups. The AAP hailed the decision as a historic outcome that protects children's health and promotes recommendation-based vaccination.