Answer and explanation: During World War II the US government sent people of Japanese ascensions to internment camps based on a preocupation on national security. After the japanese attack to Pearl Harbor, in 1941, Roosevelt decided in 1942, to give the order of sending japanese people to the internment camps with the supposed aim to avoid espionage and to protect Japanese descents from being injured by anti-japanese americans. Of the around 117,000 people of Japanese descent who were sent to the camps, two-thirds were native-born citizens of the US.
These measures were analyzed later as racism, discrimination, the camps were compared to concentration camps. Some people still believe it was a security necessity at the time.