Third and fourth terms of the presidency of Franklin D. Roosevelt well-defended island of Iwo Jima, taking control of that island the following month. On April 1, the U.S. landed on Okinawa Island, the largest of the Ryukyu Islands. The Japanese allowed the Americans to land on the island before launching a fierce attack that included "kamikaze" suicide attacks by Japanese aircraft. Japanese forces on Okinawa held out until June 1945; U.S. forces suffered over 60,000 casualties during the operation. In late 1943, Roosevelt, Churchill, and Stalin agreed to meet to discuss strategy and post-war plans at the Tehran Conference, which marked Roosevelt's first face-to-face meeting with Stalin. At the conference,
History of Japanese Americans children, the Nisei Japanese American. The Issei were exclusively those who had immigrated before 1924. Because no new immigrants were permitted, all Japanese Americans born after 1924 were — by definition — born in the U.S. This generation, the Nisei, became a distinct cohort from the Issei generation in terms of age, citizenship, and English language ability, in addition to the usual generational differences. Institutional and interpersonal racism led many of the Nisei to marry other Nisei, resulting in a third distinct generation of Japanese Americans, the Sansei. Significant Japanese immigration did not occur until the Immigration Act of 1965