Main Page | See live article | Alphabetical index The Espionage and Sedition Acts of 1917, were laws passed in the United States during World War I. The Acts outlawed utterances detrimental to the war effort, and the postmaster general was permitted to exclude seditious material from the mails. The laws were ruled constitutional in the United States Supreme Court case Schenck v. United States, 249 U.S. 47 (1919). See also: Alien and Sedition Acts Schenck v. United States 249 US 47 1919 This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.