United States federal law passed shortly after entering World War I, on June 15, 1917, which made it a crime for a person to convey information with intent to interfere with the operation or success of the armed forces of the United States or to promote the success of its enemies. The legislation was passed at the urging of President Woodrow Wilson, who feared any widespread dissent in time of war, thinking that it constituted a real threat to an American victory.