On this day 100 years ago, the United States passed the strictest immigration law of its time: the Immigration Act of 1917. The Immigration Act barred an ambiguous and long list of people from entering the country. US lawmakers who drafted and passed the immigration law characterized it as necessary for the country's security. Photos: World War I: A time of upheaval Photos: World War I: A time of upheaval French soldiers sing the national anthem at the beginning of World War I in August 1914. The Immigration Act of 1917 was revised by the Immigration and Nationality Act of 1952, also known as the McCarran-Walter Act.

Source: CNN February 05, 2017 05:03 UTC