Robert F. Kennedy Jr.’s opinions about vaccine safety, both past and present, appeared likely to lead at least a few Senate Republicans to vote against his nomination following a second confirmation hearing Thursday.

Robert F. Kennedy Jr. was back in the hot seat being grilled by senators ahead of a confirmation vote in his effort to become the director of Health and Human Services.

What to know from Robert F. Kennedy, Jr.’s hearings before the Senate Finance Committee on Wednesday and the Senate Health, Education, Labor, and Pensions on Thursday.

Watch live as RFK Jr. faces questions from senators in his confirmation hearing as President Trump’s nominee to lead the Department of Health and Human Services.

If approved, Kennedy will control a $1.7 trillion agency that oversees food and hospital inspections, hundreds of health clinics, vaccine recommendations and health insurance for roughly half the country.

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

Robert F. Kennedy Jr.'s long record of questioning the safety of childhood vaccinations persisted as a flash point for him Thursday during a confirmation hearing where a key Republican quickly raised concerns about his views.

Robert F. Kennedy's nomination will put Republican lawmakers' loyalty to the test, as the former Democrat holds a range of unorthodox positions that could alienate both conservatives and liberals.

In a scathing letter to lawmakers weighing 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.

Robert F. Kennedy Jr. will face his first vetting by lawmakers this morning when Senate Finance Committee members are sure to ask about his past comments on vaccines, federal health agency reform and abortion.

As he seeks to lead the health department, Mr. Kennedy wore a thin tie dotted with feathered creatures to cap a classic suit.

GOP Sen. Bill Cassidy said he was "struggling" with Kennedy's nomination for health and human services secretary after repeatedly challenging his views on vaccines.