A restriction passed in 1918, after U.S. entry into World War I, that mandated the deportation of any alien who was a proven member of an anarchist organization upon entering the United States. It allowed for the prosecution of aliens through an administrative process and was an attempt to control public discourse during the war.
Battle of Elixheim happened on 1705-07-18.
Rákóczi's War of Independence happened in 1705.
Siege of St. John's happened in 1705-03.
Bavarian People's Uprising happened in 1705-11.
The Alien Act prevented immigrants who aren't citizens (A.k.a Aliens) into the United States.
1798
Alien Crush happened in 1988.
Alien Breed happened in 1991.
Alien's Return happened in 1983.
Alien Carnage happened in 1993.
Heiankyo Alien happened in 1980.