High Quality Content by WIKIPEDIA articles! Prior restraint is a legal term related to censorship in the United States referring to government actions that prevent communications from reaching the public. Its main use is to keep materials from being published. Censorship that requires a person to seek governmental permission in the form of a license or imprimatur before publishing anything constitutes prior restraint every time permission is denied. More recently, prior restraint has often taken the form of an injunction or other governmental order prohibiting the publication of a specific document or subject.