Dr. Terry Simpson on Instagram: "Robert F. Kennedy Jr. tells us that America is “the sickest country in the world.” One almost admires the audacity of a man who can stand in a nation that eradicated smallpox, slashed childhood mortality, and gave the world the very vaccines he disparages—and declare it the global epicenter of illness. Yes, America is sick—but not in the way he imagines. We are sick with gun violence, with fentanyl overdoses, with an epidemic of willful ignorance dressed up as po