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President John F. Kennedy’s grandson Jack Schlossberg – a candidate for Congress in New York – doubled down on criticism of his cousin, Secretary of Health and Human Services (HHS) Robert F. Kennedy Jr., on Tuesday and called Trump’s cabinet chief “dangerous.”
“Tell us what you think about your cousin, the Health Secretary, and his position on vaccines that most of these kids won’t get,” asked Mike Barnicle, a regular guest on MS NOW’s “Morning Joe.”
Schlossberg said that RFK Jr. he is a “dangerous person” who is in charge of life and death decisions.
“And as funny as other claims and possible entertainment – it’s all fun when you design a new food pyramid. But when people die of measles, this is a serious business,” said Schlossberg. “Unvaccinated people; they rejected the recommendation to get Hepatitis B vaccine in newborns. Why?”
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Jack Schlossberg speaks to members of the New York State Nurses Association before joining a line to support nurses on strike outside Mount Sinai West on Jan. 12, 2026, New York City. US Secretary of Health and Human Services Robert F. Kennedy Jr. speaks as he participates in a TV interview at the White House on Jan. 7, 2026, Washington, DC. (Edna Leshowitz/Getty Images; Alex Wong/Getty Images)
He continued, “I want the Democrats to win the House so we can control the Judiciary Committee because of one word, ‘subpoena.’ I want to know who pays for the words that come out of his mouth, because they are not supported by science.”
The Department of Health and Human Services did not immediately return Fox News Digital’s request for comment.
Schlossberg is running for Rep. Jerry Nadler’s seat, as the longtime Democratic lawmaker retires.
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Jack Schlossberg, grandson of President John F. Kennedy, poses for a photo as US President Joe Biden heads to Michigan from the South Lawn of the White House in Washington, on September 6, 2024. (Annabelle Gordon/Reuters)
Schlossberg was known for posting hundreds of viral videos on social media before launching his campaign for Congress.
He posted one video singing with second lady Usha Vance, asked on X, “Truth or lie: Usha Vance is hotter than Jackie O” in January 2025.
Kennedy’s legacy has more than 800,000 TikTok followers.
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Jack Schlossberg, grandson of President John F. Kennedy, speaks during Day 2 of the Democratic National Convention (DNC) in Chicago, Aug. 20, 2024. (Reuters)
As former acting President Joe Biden and former Vice President Kamala Harris in 2024, Schlossberg met with Democratic candidates across the country, including former Sen. Bob Casey, D-Pa., who was defeated by Sen. Dave McCormick, R-Pa., last year.
Former House Speaker Nancy Pelosi endorsed Schlossberg on Tuesday, according to a post on her X account.
Schlossberg told a Morning Joe panel Tuesday that he was “proud” of Pelosi’s endorsement, calling her “my hero” and “the backbone of the Democratic Party.”
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Fox News’ Deirdre Heavey contributed to this report.
