Robert F. Kennedy Jr. is distancing himself from his anti-vaccine work as he seeks to become the leader of the nation’s top health agency under President Donald Trump, according to government ethics documents released on Wednesday.

The former attorney general made the comment in 1964, roughly six months after the assassination of his brother.

The NFL quarterback, a known vaccine skeptic, previously turned down Robert F. Kennedy Jr.’s offer to be his running mate to continue playing football.

Trump, returning to the White House, vowed to release classified documents on the JFK assassination and others. While he previously released some files, many remain classified due to national security concerns.

President-elect said he would release government files about the assassinations of President John F. Kennedy, Robert F. Kennedy, and Martin Luther King, Jr.

Robert F. Kennedy Jr. has been outspoken about changes he would like to see in the agriculture industry, from fewer chemicals to removing seed oils.

Robert F. Kennedy Jr.'s personal attorney previously ... ABC News' Linsey Davis speaks with epidemiologist and ABC News contributor Dr. John Brownstein on the medical community’s reaction ...

A Trump transition savant is helping to guide Robert F. Kennedy Jr. — President-elect Donald Trump’s controversial pick to lead HHS — through the Senate confirmation process.

Donald Trump pledged at his Jan. 19 rally to release files on JFK, Robert Kennedy, and Dr. Martin Luther King Jr. Here's when you can expect them.

Pressure is mounting on Robert F. Kennedy Jr. as critics squeeze senators from both sides of the aisle to oppose President Trump’s pick to be the nation’s top health official. Kennedy’s bipartisan opponents,

Kennedy has suggested, contrary to scientific consensus, that certain vaccines are connected to childhood autism, asthma and developmental impairment