You mean the Espionage Act of 1917?
The law that put E.E. Cummings in prison for expressing nothing more than insufficient hatred toward Germans? The law that imprisoned pacifists for handing out anti-draft pamphlets? That law?
The law that was passed during a spasm of war-time, nationalist hysteria to quiet fears that the Kaiser had infiltrated the "Home Front" but in application infringed free speech? The law that caused newspapers to declare the "End of Liberty?" The law which is considered by historians and constitutional scholars to be an artifact of American history that only hung around because of the Red Scare? That law?
Biting the hand that feeds IT
