"Roth v. United States" was a landmark Supreme Court case decided in 1957. The case involved Samuel Roth, a publisher who was convicted for distributing obscene materials. Roth challenged the conviction, arguing that the law violated his First Amendment rights to free speech. The Supreme Court ultimately ruled that obscenity is not protected by the First Amendment. The Court established a new standard for determining what constitutes obscenity, focusing on whether the material appealed to prurient interests and lacked serious literary, artistic, political, or scientific value. This decision significantly impacted laws regarding obscenity in the United States.