America’s national public health agency is in a free fall after the White House abruptly fired the director of the Centers for Disease Control and Prevention. Since the firing, four high-ranking officials resigned in protest. Former CDC Director Dr. Tom Frieden joined “The Weekend: Primetime” to discuss the impacts of the shakeup, and the concerns with having Health Secretary Robert F. Kennedy Jr. at the helm. "I never thought I would see the day when you couldn't trust what's on the CDC