Does the U.S. have the right to give up civil liberties in times of war?

No, very simply. The United States should promote loyalty, but if it affects the Constitution, which the county was founded on, then it is wrong.  After all the facts are presented and if the citizens do not agree then a country should not be going to war. In WWI the U.S. citizens could not wait to get into the war. In my opinion there was no reason for censorship. Secrets get people into trouble.  Sending Americans into war with out telling them what they are getting into is wrong.  Hiding facts about both sides is not a good idea.  Promoting the country is one thing, but violating the first amendment makes the Constitution seem like guidelines and close to a joke. If the rules are bent during times of war, then what is stopping them from being changed at any other time? Civil Liberties are the rights given to U.S. citizens at birth, and should always remain that way.