If executive order 9066 was unconstitutional, why was it allowed to stand?

AJapanese Americans did not protest the order, so efforts to end it lost momentum

BThere was evidence that Japanese Americans really were helping Japan plan an invasion on U.S

CThe Supreme Court ruled that during war time, the constitution can be overridden in the name of national security

DSince it was only temporary, and would not last once the war was over, it was allowed to stand.