Espionage Act in 1917. In 1918, the Sedition Act made it a crime to make spoken or written statements that intended to disrespute on the form of government or that advocated with interference or even on war effort. This resulted in more repression (red scare).
Effects for U.S. Women
There was a growth in the industry. American business industries extended throughout the world.
Effects for U.S. Immigrants
As former Russia became the Soviet Union, in 1919 the United States, 4 million workers went on strike (steel strike). The middle-class opinion turned against the labor movement.
Effects for African-Americans
Women worked during the War as manufacturers to make War materials, take the jobs already vacated by men that went to war. Women were also nurses and physicians. After the War, they were disillusioned. In 1918, the 19th amendment to the Constitution was passed and this eventually granted the right to women to vote.
WWI brought an end to the biggest era of immigration in American history. Travel became more limited and dangerous. Some refugees tried to escape the War. Many immigrants served in the U.S. forces, but there was hostility towards people of German and Irish descent.
African American soldiers fought in the War. When they returned home as citizens of the world, they questioned their social status in American society. Between 1914 and 1920, about half a million Southerners (African-Americans) headed north (Chicago, Detroit, NYC, etc.)