USC April 15, 2024 11:24 pm USC valedictorian commencement speech canceled USC announced that the valedictorian will not be allowed to deliver the 2024 commencement speech during graduation, citing security concerns, Robert Kovacik reports for the NBC4 News on April 15, 2024. US & World Videos 0:23 Driver killed in crash into El Monte riverbed 2:31 Yacht with fireworks goes up in flames in Marina del Rey 2:54 Yacht catches fire in Marina del Rey 0:52 AirTag helps OC resident track stolen bike 3:09 Irvine physician's mission to inspire youth