Amid the largest measles outbreak in the United States in a generation, he’s focused on unproven treatments while downplaying vaccines. He canceled investments in promising medical research that will leave us ill prepared for future health emergencies. He replaced experts on federal health advisory committees with unqualified individuals who share his dangerous and unscientific views. And he championed federal legislation that will cause millions of people with health insurance through Medicaid to lose their coverage. On RFK Jr., one of those sources is the group Defend Public Health.