Robert F. Kennedy Jr.'s record of questioning childhood vaccine safety came under fire from a key Republican at the Trump HHS pick's confirmation hearing.

Donald Trump is on the precipice of taking back control of the White House, with his presidential inauguration taking place today.

Robert F. Kennedy Jr. is facing some skepticism from the public. A survey from The Associated Press-NORC Center for Public Affairs Research shows only about 3 in 10 Americans approve of President Donald Trump nominating Kennedy as Department of Health and Human Services secretary.