FACT IS, there were MANY Japanese spies and many of these so-called Japanese Americans considered themselves Japanese and did not even speak English.  

Many of these "Japanese-Americans", lived in Pearl Harbor and took pictures of our fleet, monitored troop and ship movements, etc.    They also took pictures of Naval Bases on the West Coast and communicated with their homeland, the Japanese Islands.

You don't hear much outrage about Allied POW's that were beheaded by Japanese soldiers or the atrocities committed by Unit 731.  We were actually way to kind to these people.