Robert F. Kennedy Jr. has built his fortune and reputation on disparaging the government scientists and institutions he's now in line to lead as HHS secretary.

If confirmed by the Senate, Kennedy would head the Department of Health and Human Services (HHS), which oversees many of the country’s health agencies, from the Food and Drug Administration (FDA) to the Centers for Disease Control and Prevention (CDC).

Caroline Kennedy wrote a blistering letter to the U.S. Senate Tuesday urging them to reject her cousin Robert F. Kennedy Jr.’s nomination as Health and Human Services secretary. He is set to appear before the Senate Finance Committee on Wednesday for the first of two confirmation hearings as President Donald Trump’s nominee for secretary of the Department of Health and Human Services.