"New York Times Co. v. United States" was a landmark Supreme Court case decided in 1971. The case involved the New York Times publishing classified documents known as the Pentagon Papers, which detailed the U.S. government's decision-making in the Vietnam War. The government sought to prevent publication, arguing it would harm national security. The Supreme Court ruled in favor of the New York Times, emphasizing the importance of a free press under the First Amendment. The decision reinforced the principle that the government cannot impose prior restraint on the media, allowing for greater transparency and accountability in government actions.