5. John McCain

John McCain, once a Navy pilot and Vietnam War prisoner of war, brought enduring courage into his decades-long Senate career. His experience as a POW profoundly influenced his dedication to service, making him a fierce advocate for veterans and national security. McCain earned respect for his willingness to reach across the aisle, embracing bipartisanship in turbulent times. His authenticity, resilience, and commitment to principle define his lasting legacy as both a military hero and an influential statesman.