Patrick Kennedy suggests Robert F. Kennedy Jr. would be open to use of addiction medications as well as "wellness farms" for opioid use disorder.

Robert F. Kennedy Jr. has said vaccines are not safe. His support for abortion access has made conservatives uncomfortable.

Robert F. Kennedy Jr.'s cousin urged senators to reject his nomination as health and human services secretary.

Caroline Kennedy, the outgoing US ambassador to Australia, has urged US senators to reject her cousin's bid to become health secretary.

In a harsh letter to lawmakers considering Robert F. Kennedy Jr.’s nomination for health secretary, Ms. Kennedy called her cousin unfit for the job and a “predator” who led family members to addiction.

"He put baby chickens and mice in the blender," she says of her cousin, chosen by President Trump to head HHS.

Caroline Kennedy warns senators about Robert F. Kennedy Jr.’s nomination, questioning his ethics and views on vaccines.

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.

President Donald Trump signed a record number of executive orders during his first week back at the White House.

NBC White House Correspondent Vaughn Hillyard and MSNBC legal analyst Andrew Weissmann join Nicolle Wallace to discuss a searing letter former ambassador to Japan Caroline Kennedy wrote to the Senate,