During World War II, the United States forcibly relocated and incarcerated at least 125,284 people of Japanese descent in 75 identified incarceration sites. Most lived on the Pacific Coast, in concentration camps in the western interior of the country. Approximately two-thirds of the inmates were United States citizens. These actions were initiated by president Franklin D. Roosevelt via an executive order shortly after Imperial Japan's attack on Pearl Harbor. Of the 127,000 Japanese Americans who were living in the continental United States at the time of the Pearl Harbor attack, 112,000 resided on the West Coast. About 80,000 were Nisei (literal translation: 'second generation'; American-born Japanese with U.S. citizenship) and Sansei ('third generation', the children of Nisei). The rest were Issei ('first generation') immigrants born in Japan who were ineligible for U.S. citizenship under U.S. law. Japanese Americans were placed in concentration camps based on local population concentrations and regional politics. More than 112,000 Japanese Americans who were living on the West Coast were incarcerated in camps which were located in its interior. In Hawaii (which was under martial law), where more than 150,000 Japanese Americans comprised over one-third of the territory's population, only 1,200 to 1,800 were incarcerated. California defined anyone with or more Japanese lineage as a person who should be incarcerated. Colonel Karl Bendetsen, the architect of the program, went so far as to say that anyone with "one drop of Japanese blood" qualified for incarceration. Roosevelt authorized Executive Order 9066, issued two months after Pearl Harbor, which allowed regional military commanders to designate "military areas" from which "any or all persons may be excluded." Although the executive order did not mention Japanese Americans, this authority was used to declare that all people of Japanese ancestry were required to leave Alaska and the military exclusion zones from all of California and parts of Oregon, Washington, and Arizona, with the exception of those inmates who were being held in government camps. The detainees were not only people of Japanese ancestry, they also included a relatively small number—though still totaling well over ten thousand—of people of German and Italian ancestry as well as Germans who were expelled from Latin America and deported to the U.S. Approximately 5,000 Japanese Americans relocated outside the exclusion zone before March 1942, while some 5,500 community leaders had been arrested immediately after the Pearl Harbor attack and thus were already in custody. The United