In February 2015, Hawaiian- President Barack Obama designated Honouliuli at a unit of the National Park Service. Following the Japanese attack on Pearl Harbor in 1941, then President Franklin Deleno Roosevelt signed Executive Order 9066, which allowed the military to forcibly remove and confine over 120,000 Japanese Americans on the West Coast and Hawaii. Honouliuli Internment camp was the largest and and longest-used site of confinement on the Hawaiian Islands where both US citizens and residents of Japanese ancestry as well as people of European ancestry were confined for the duration of the war. The camp was also used for prisoners of war, confining enemy soldiers from Japan, Korea, Okinawa, Taiwan, and Italy. 
