Health Secretary Robert F. Kennedy Jr. Thursday faced grilling from a congressional committee over his effort to upend vaccine policy and widespread turmoil at federal health agencies on his watch.

RFK Jr. appeared Thursday morning before the Senate Finance Committee, where he is expected to face questions about mass layoffs , including the abrupt ouster of Centers for Disease Control director Susan Monarez, and draconian budget cuts that critics say will cripple the nation’s ability to prevent disease.

Kennedy, long one of the nation’s most prominent vaccine skeptics, will also likely be asked about his effort to reshape the nation’s vaccine policies to reflect his stated suspicions about even long-established shots with proven track records of health and safety.

President Trump

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