Luigi Mangione reveals motive for CEO's killing after pleading guilty in federal case

In a surprise turn, Luigi Mangione pleaded guilty to the shooting death of UnitedHealthcare CEO Brian Thompson. Mangione admitted he stalked and shot Thompson in 2024 outside a Hilton hotel in Manhattan. He potentially faces life in prison. The 28-year-old is also still facing state murder charges for Thompson's death in New York. Justice correspondent Ali Rogin reports.