"Underworld USA" is a 1997 crime film directed by James Ellroy, based on his novel "American Tabloid." The movie explores the dark underbelly of organized crime in the United States during the late 1950s and early 1960s. It follows the lives of three men entangled in a web of corruption, violence, and betrayal as they navigate the criminal landscape. The film delves into the connections between the mafia, politics, and the media, showcasing how these elements influence each other. It highlights the impact of crime on American society and the moral complexities faced by its characters, ultimately painting a gritty portrait of the era.