Legal challenges have arisen against HHS Secretary Robert F. Kennedy Jr.’s unilateral removal of COVID-19 vaccine recommendations for pregnant women and healthy children. Medical groups, including the American Academy of Pediatrics, argue the directive undermines evidence-based vaccine programs and threatens public health infrastructure. Concurrently, a court order ruled that federal agencies’ removals of gender-related online data were "arbitrary and capricious" under administrative law, emphasizing legal checks on health policy changes. The ongoing policy and legal landscape reflects tensions in federal vaccine guidance and regulatory actions under recent U.S. administration shifts.