Ellis Island
During and immediately following World War II, Ellis Island was used to hold German merchant mariners and "enemy aliens"—Axis nationals detained for fear of spying, sabotage, and other fifth column activity. In December 1941, Ellis Island held 279 Japanese, 248 Germans, and 81 Italians removed from the East Coast. Unlike other wartime immigration detention stations, Ellis Island was designated as a permanent holding facility and was used to hold foreign nationals throughout the war. A total of 7,000 Germans, Italians and Japanese would be ultimately detained at Ellis Island. It was also a processing center for returning sick or wounded U.S. soldiers, and a Coast Guard training base. Ellis Island still managed to process tens of thousands of immigrants per year during this time, but many fewer than the hundreds of thousands per year who arrived before the war. After the war, immigration rapidly returned to earlier levels.
Ellis Island
The federal government, which had bought the island in 1808, began expanding the island by land fill, to accommodate the immigration station opened in 1892. Land filling continued in stages until 1934.
Nine-tenths of the current area is artificial island that did not exist at the time of the interstate compact. New Jersey contended that the new extensions were part of New Jersey, since they were outside New York's border and were in fact within New Jersey's border. In 1956, after the 1954 closing of the U.S. immigration station, the then Mayor of Jersey City, Bernard J. Berry, commandeered a U.S. Coast Guard cutter and led a contingent of New Jersey officials on an expedition to claim the island. In 1997, the state filed suit to establish its jurisdiction, leading New York City Mayor Rudolph Giuliani to remark dramatically that his father, an Italian who immigrated through Ellis Island, never intended to go to New Jersey. The border was redrawn using information based on studies using geographic information science.