Luigi Mangione, the man accused of killing UnitedHealthcare CEO Brian Thompson, appeared in front of a judge on Friday where he pleaded not guilty to the federal charges against him. He faces four federal counts, including murder through the use of a firearm, which makes him eligible for the federal death penalty. NBC’s Sam Brock reports for Saturday TODAY. » Subscribe to TODAY: youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TODAY on Instagram: instagram.com/todayshow...