Congress enacted the Sedition Act of 1918 on May 16, expanding federal power to prosecute speech deemed harmful to the war effort during World War I. The law criminalized disloyal utterances about the government, the military, or the flag, targeting antiwar activists, socialists, and draft resisters.
The Supreme Court upheld convictions under this statute in three landmark cases. In Schenck v. United States, the Court established the "clear and present danger" test, allowing speech restrictions when words create imminent lawless action. Justice Oliver Wendell Holmes wrote that shouting fire in a crowded theater represented unprotected speech by the same logic.
Socialist Party leader Eugene V. Debs faced prosecution for a speech criticizing American involvement in the war. The Court upheld his conviction in Debs v. United States, finding his words violated the Sedition Act even though he never explicitly urged draft resistance.
In Abrams v. United States, Russian immigrant Jacob Abrams distributed leaflets opposing U.S. intervention in Russia's civil war. The Court upheld his conviction, though Holmes dissented, arguing the government had not met the clear and present danger standard.
These decisions created decades of precedent chilling political speech. The government prosecuted roughly 2,100 people under the Espionage and Sedition Acts during World War I, imprisoning many for expressing pacifist views or criticizing government policy.
The Sedition Act expired in 1921, but its legal legacy persisted. Courts continued citing Schenck's "clear and present danger" test through the mid-20th century before shifting toward stronger First Amendment protections in Brandenburg v. Ohio, which raised the standard to "imminent lawless action."
The 1918 Act represents a cautionary moment when the Supreme Court subordinated free speech to perceived