What legal concept emerged from the ruling in the case of New York Times v. US?

The ruling in the case of New York Times v. United States fundamentally established that prior restraint, or the government's ability to prevent the publication of information before its dissemination, is generally unconstitutional when it conflicts with the rights of free press guaranteed by the First Amendment. The Supreme Court found that the government did not meet the heavy burden of proof required to justify such restraint.

The case arose when the New York Times published the "Pentagon Papers," classified documents related to the Vietnam War, and the government attempted to issue an injunction to prohibit the publication. The Court's decision emphasized the paramount importance of a free press in a democratic society, asserting that any attempt by the government to impose prior restraint would face significant judicial scrutiny and must be justified by compelling reasons, particularly in the context of national security.

This landmark ruling reinforced the role of the press as a check on government power and underscored the protection of free expression, marking a significant moment in safeguarding press freedoms in the United States.