U.S. President Joe Biden's State of the Union address on Tuesday will feature a guest list that includes the man who disarmed a gunman who fatally shot 11 people in California, a former Afghan ambassador, and the family of Tyre Nichols, who was fatally beaten by Memphis police. Biden is expected to use the speech, which is delivered during a joint session of Congress, as an unofficial start to the 2024 presidential campaign season, laying out his policy priorities.