Vice President JD Vance gave the keynote address on the second night of the Republican midterm convention, which also featured Health and Human Services Secretary Robert F. Kennedy Jr., House Speaker Mike Johnson and a final send-off from President Donald Trump. Here’s what we found in fact-checking their remarks:
Person: Robert F. Kennedy Jr.
What We Know About Pennsylvania’s Two ‘Measles-Associated’ Deaths
After the Pennsylvania Department of Health announced two cases of measles-related deaths in one county, the local coroner appeared to contradict the account. And in an ongoing spat with Pennsylvania Gov. Josh Shapiro, Health and Human Services Secretary Robert F. Kennedy Jr. has alleged that a Shapiro staffer may have even “fabricated” the deaths. We’ll lay out what we know.
Kennedy Distorts Stat in Celebrating Obesity Drop
In recent public appearances, Health and Human Services Secretary Robert F. Kennedy Jr. has said obesity dropped 3% “in the last year” and suggested the Trump administration deserves at least some of the credit. One poll shows obesity falling by about that much — but the decline happened over several years and began well before President Donald Trump’s current term.
RFK Jr. Falsely Claims New Evidence Supports Splitting MMR Vaccine
Following an executive order that called for breaking up the combination measles, mumps and rubella, or MMR, vaccine, Health and Human Services Secretary Robert F. Kennedy Jr. said that a “recent” study “just came out” that “very strongly supports” the idea. But there’s no evidence of any such credible study, past or present.
Trump and RFK Jr. Repeat False and Misleading Vaccine Claims
RFK Jr.’s Falsehood-Filled CNN Interview
In a contentious interview on CNN’s “State of the Union,” Health and Human Services Secretary Robert F. Kennedy Jr. made several false, misleading and baseless claims about the origins of Lyme disease and the respiratory syncytial virus, the COVID-19 pandemic, and what the science shows about autism, vaccination and acetaminophen use during pregnancy.
RFK Jr.’s Flawed Claims About Sperm Count and Fertility
A Timeline of RFK Jr.’s Mixed Messaging on the Measles Vaccine
In defending his record on measles, Health and Human Services Secretary Robert F. Kennedy Jr. twice said during a recent Senate hearing, “We promote” the measles vaccine. While it’s true that the Centers for Disease Control and Prevention continues to recommend the shot, Kennedy has rarely made an unequivocal endorsement of it, even as the nation has seen an alarming rise in measles cases.
RFK Jr.’s Muddled Claims on Drug Approval Speed
The Food and Drug Administration in recent months has approved a small number of drugs quite quickly under a new expedited review program. But Health and Human Services Secretary Robert F. Kennedy Jr. has overstated the impact of the program by making misleading comparisons to the pace of drug approvals in the past.
Kennedy Denies the One Big Beautiful Bill Act’s Spending Cuts to Medicaid
The nonpartisan Congressional Budget Office estimated that the One Big Beautiful Bill Act will reduce federal Medicaid spending by more than $900 billion over a decade. But in a series of congressional hearings last month, Health and Human Services Secretary Robert F. Kennedy Jr. misleadingly claimed that “there are no cuts to Medicaid” as a result of that 2025 law.









