Japanese-American Claims Act
The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy on the United States naval base at Pearl Harbor in Honolulu, Hawaii, on the morning of December 7, 1941. The attack sank four U.S. battleships, destroyed 188 U.S. aircraft, and killed 2,403 U.S. citizens within two hours, and led to the United States joining World War II. Once the United States entered the war and anti-Japanese sentiment began to circulate, Americans increasingly reacted with racism and hostility, viewing people of Japanese descent were treated as enemies regardless of whether they were U.S. citizens. The U.S. government expressed concerns about the loyalty of the Japanese people living in America and about Japanese spies sending information to Japan. "The U.S. Department of the Treasury froze the assets of all citizens and resident aliens who were born in Japan, and the Department of Justice arrested some 1,500 religious and community leaders as potentially dangerous enemy aliens. Because many of the largest populations of Japanese Americans were in close proximity to vital war assets along the Pacific coast. The result was President Franklin D. Roosevelt's Executive Order 9066."
Hell ship
was torpedoed on 12 September 1944 by which later realized the ship carried 1,317 Australian and British prisoners of war (POWs) from Singapore to Formosa (Taiwan). A total of 1,159 POWs died. The 350 who were in lifeboats were bombarded and all killed by a Japanese navy vessel the next day when they were rowing towards land. On 15 September, the three submarines returned to the area and rescued 63 surviving POWs who were on rafts. Four of them died before they could be landed at Tanapag Harbor, Saipan, in the Mariana Islands. 
In the same convoy and on the same day, with another 950 British POWs on board, was also sunk by . 431 of them were killed.