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: