The Japanese attack on Pearl Harbor and the subsequent entry of America into World War II had a devastating impact on the US Jōdo Shinshū temples, which lingers to the present day. War hysteria, economic jealousies, and racism led to President Franklin D. Roosevelt's signing of Executive Order 9066 which called for the removal of Japanese-Americans from the West Coast and placement into "internment" camps. Temples were closed and many Japanese-American Buddhist families hid or destroyed their butsudans (home altars), and other religious items. Jōdo Shinshū priests were arrested by the FBI since they were viewed as community leaders, and were imprisoned separate from their sanghas. However, Buddhist services were allowed to be conducted within the internment camps.