The NBA legend writes about the importance of protest for social justice in new book, "We All Want to Change the World." ...

During the hearing, lawmakers called out Kennedy on his reluctance to advise parents to vaccinate their children as the nation faces a measles outbreak.

The health secretary's claim that his views on vaccinations are "irrelevant" is an anti-vaxxer strategy.

Kennedy faced questions on vaccines, canceled medical research, and his drastic overhaul of the federal health agency.