BREAKING: Luigi Mangione pleads guilty to federal charges in the assassination of UnitedHealthcare CEO Brian Thompson, telling the court, "I knew what I was doi

BREAKING: Luigi Mangione pleads guilty to federal charges in the assassination of UnitedHealthcare CEO Brian Thompson, telling the court, "I knew what I was doing." Judge Margaret Garnett accepted his plea after asking whether he understands that he could face a maximum sentence of life in prison. …