The Tule Lake National Monument in Modoc and Siskiyou counties in California, consists primarily of the site of the Tule Lake War Relocation Center, one of ten concentration camps constructed in 1942 by the United States government to incarcerate Japanese Americans forcibly removed from their homes on the West Coast. They totaled nearly 120,000 people, more than two-thirds of whom were United States citizens. Among the inmates, the notation "" was sometimes applied. After a period of use, this facility was renamed the Tule Lake Segregation Center in 1943, and used as a maximum security, segregation camp to separate and hold those prisoners considered disloyal or disruptive to the operations of other camps. Inmates from other camps were sent here to segregate them from the general population. Draft resisters and others who protested the injustices of the camps, including by their answers on the loyalty questionnaire, were sent here. At its peak, Tule Lake Segregation Center (with 18,700 inmates) was the largest of the ten camps and the most controversial. 29,840 people were held there over the four years it was open. After the war it became a holding area for Japanese Americans slated for deportation or expatriation to Japan, including some who had renounced US citizenship under duress. Many joined a class action suit because of civil rights abuses; many gained the chance to stay in the United States through court hearings but did not regain their citizenship due to opposition by the Department of Justice. The camp was not closed until March 20, 1946, months after the end of the war. Twenty years later, members of the class action suit gained restoration of US citizenship through court rulings. California later designated this Tule Lake camp site as a California Historical Landmark and in 2006, it was named a National Historic Landmark. In December 2008, the Tule Lake Unit was designated by President George W. Bush as one of nine sites—the only one in the contiguous 48 states—to be part of the new World War II Valor in the Pacific National Monument, marking areas of major events during the war. In addition to remains of the concentration camp, this unit includes Tulelake camp, also used during the war; as well as the rock formation known as the Peninsula/Castle Rock. The John D. Dingell, Jr. Conservation, Management, and Recreation Act, signed March 12, 2019, split up the three units of