A significant event in 1963 that led to a change in U.S. leadership was the assassination of President John F. Kennedy on November 22 in Dallas, Texas. Kennedy, the 35th President, was shot during a motorcade, and his death shocked the nation and the world. Vice President Lyndon B. Johnson was sworn in as President shortly after the assassination, leading to significant shifts in U.S. policies, including the escalation of American involvement in the Vietnam War. The event profoundly impacted American society and politics, leading to widespread mourning and reflection on American values and leadership.