RFK Jr. is facing fresh scrutiny after newly obtained documents challenged his claim that his 2019 Samoa trip had “nothing to do with vaccines.” A letter to Samoa’s prime minister shows Kennedy proposed studying the country’s MMR vaccines and referenced “vaccine” or “vaccination” eight times. The revelations have sparked questions over RFK Jr.’s Senate confirmation testimony, Samoa trip and vaccine claims, while HHS denies that he misled Congress.

From the daily newsletter: assessing Kennedy’s war on immunization.

A 2019 trip to Samoa has been linked to a measles outbreak that killed dozens of people.