Donald Trump has nominated three Republican members of the House for senior positions so far: Elise Stefanik as UN ambassador, Matt Gaetz as attorney general and Mike Waltz as national security advisor.

President-elect Donald Trump is expected to nominate Robert F. Kennedy Jr. ― an anti-vaccine conspiracy theorist who formerly competed against Trump for the White House ― to lead the U.S. Department of Health and Human Services, Politico and CNN reported Thursday.

Kennedy has made false claims about childhood vaccines and the COVID vaccines that public health experts credit with ending the pandemic and saving millions of lives.