The main impact of <em>President Roosevelt's Executive Order 9066 </em>was that thousands of Japanese Americans were forced into internment camps,since they were deemed a threat to the United States during World War 2.
In February 1942,just <em>2 months after Pearl Harbour</em>,President Roosevelt as Commander-in-Chief,issued Executive Order 9066,which had the effect of <em>relocating all persons of Japanese ancestry,both citizens and aliens,inland,outside of the Pacific military zone.</em>