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.
Swains Island
In 1907, the Resident Commissioner of the British Gilbert and Ellice Islands (then a British protectorate; since 1979 the sovereign nations of Kiribati and Tuvalu) claimed that Swains belonged to the United Kingdom, demanding payment of a tax of US$85. Jennings paid, but he brought the matter before the U.S. State Department, and his money was ultimately refunded. The British government furthermore conceded that Swains was an American possession.
The ownership of the island came into question after Eli Jr.'s death in 1920 and that of his wife in 1921. The United States decided to give the right of administration jointly to Eli's daughter Ann and son Alexander, while making it officially part of American Samoa by annexation on 4 March 1925. Alexander Jennings, the son of Eli Jennings, Jr., became managing owner of the island. The population at this time was around 100. During the Pacific War, the island had a population of 125, and had a naval radio station.