Robert F. Kennedy Jr. traveled to Samoa to lobby against vaccines in 2019. Four months later, 83 people, mostly children, died from a catastrophic measles outbreak. Then, he lied to Congress about it. Kennedy told the Senate his June 2019 trip to Samoa had "nothing to do with vaccines." Emails obtained by the Guardian and Associated Press prove this was false—US embassy staff documented Kennedy visiting because of vaccine safety concerns. The evidence is clear that Kennedy lied. Congress must investigate how Kennedy misled senators, what role his visit played in the deadly outbreak, and whether criminal charges are warranted. We demand full transparency about the emails, Kennedy's activities in Samoa, and his organization's communications with officials before 83 people died. The American people deserve to know the truth about someone now shaping our nation's vaccine policy. Launch a comprehensive investigation into Robert F. Kennedy Jr.'s false testimony and his role in undermining vaccination efforts. Demand accountability and transparency now.