WASHINGTON — 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 Wednesday.

U.S. President Donald Trump has nominated Robert F. Kennedy Jr. to lead the Department of Health and Human Services, which oversees Medicare.

Donald Trump’s Justice Department cited an archaic statute in a legal filing Wednesday, arguing that the president’s executive order ending constitutionally guaranteed birthright citizenship should be totally kosher, since the children of Native Americans weren’t historically considered citizens, either.

Robert F. Kennedy Jr., who has taken different positions on the issue, has pledged to promote President Trump’s anti-abortion agenda in a bid to get confirmed as health secretary.

Kennedy’s potential ascent as HHS secretary brings promise for backers of alternative-health approaches, while skeptics say those treatments are often unproven.

Robert F. Kennedy Jr. now has a confirmation hearing scheduled in the Senate, but his nomination for health and human services secretary remains on shaky ground.

Republican lawmakers in battleground state Wisconsin want to change state law to allow candidates to remove their names from the ballot.

Robert F. Kennedy Jr.'s personal attorney previously petitioned ... ABC News’ Linsey Davis speaks with Politico’s senior Washington correspondent, Rachael Bade, about what the nomination ...

Robert F. Kennedy Jr.’s nomination for health and human services secretary has stalled as Senate Democrats and Republicans take issue with his views.

Jewel made a surprise appearance during the inauguration festivities for Donald Trump, performing for Robert Kennedy Jr. and Cheryl Hines at the 'Make America Healthy Again' ball.

Jewel is speaking out on her decision to perform at an inauguration day ball honoring Robert F. Kennedy Jr., as she says her devotion to solving the country’s mental health crisis defies political party lines.

Robert F. Kennedy Jr., Donald Trump’s nominee to run the Department of Health and Human Services, once pitched the idea to run an experiment on the children of Samoa to see whether vaccines actually work.