- It is censorship imposed, usually by a government, on expression before the expression actually takes place. The court has interpreted freedom of the press to mean government may place “no prior restraint” on speech. This doctrine was designed to make the government not closing down or seizing newspaper. Now, it prevents the government from censoring any news because the government has to protect nation security. If any information was stolen or posted in website, it can affect nation security such as military information. Therefore, it is going to be the best way that government was preventing censoring any news.