Robert F. Kennedy Jr. Defends CDC Purge in Contentious Senate Hearing

Health and Human Services Secretary Robert F. Kennedy Jr. faced intense bipartisan scrutiny during a three-hour Senate Finance Committee hearing on September 4, 2025. The proceedings focused on Kennedy's "Make America Healthy Again" initiative, which includes cutting US$500 million in mRNA vaccine research and restricting COVID-19 vaccine eligibility to seniors and high-risk individuals. Kennedy defended these moves as necessary to restore "gold-standard science" and combat chronic disease, while critics, including Republican physicians Senators Bill Cassidy and John Barrasso, warned his policies effectively deny people vaccines and undermine public trust.

A central conflict involved the firing of CDC Director Susan Monarez less than a month into her tenure. Kennedy characterized Monarez as "untrustworthy," while Monarez alleged in a Wall Street Journal op-ed that she was ousted for refusing to rubber-stamp vaccine recommendations from a panel of skeptics handpicked by Kennedy. This leadership turmoil, alongside the removal of the entire 17-member Advisory Committee on Immunization Practices, triggered a mass exodus of senior officials and a letter of protest from over 1,000 HHS employees.

While Democratic senators labeled Kennedy a "charlatan" and called for his resignation, President Donald Trump publicly defended the secretary's unconventional approach. Vice President JD Vance further supported Kennedy on social media, accusing critical senators of hypocrisy. In response to the federal restrictions, several states, including Massachusetts and California, announced independent guidelines to ensure continued vaccine access for their residents. Former CDC Director Susan Monarez is scheduled to testify before the Senate health committee on September 17.