Caroline Kennedy on Tuesday cautioned senators against confirming her cousin, Robert F. Kennedy Jr., as Department of Health and Human Services Secretary in a letter questioning his views on vaccines, detailing alleged depraved behavior and saying he has an "addiction to attention and power” one day before his confirmation hearing starts.

Trump's picks to head all of those agencies will also need to face their own Senate confirmation hearings. While some have voiced different opinions from him in the past, Kennedy

Kennedy Jr. will face questioning by Senators from both parties on Wednesday and Thursday, in one of the most anticipated confirmation hearings for President Donald Trump’s Administration. If confirmed by the Senate,