How are the camps an example of legally sanctioned discrimination and prosecution?

(This is talking about WW2 Japanese Internment Camps)

Japanese Internment camps during World War II were an example of legal because it issued by President of America, labelling them as a 'The New Enemy' in America.

Explanation:

After the attack of the Pearl harbour by the Imperial Japanese Navy's aircraft, President Roosevelt issued Executive Order NO. 9066. Under this order, American Japanese forced to leave their house to move in the detention camps. American Japanese sent to live in camps so that the authorities could take control over them. Majority of the American Japanese lived in states of California, Washington, and Oregon.