EXACTLY! BINGO!
This is because the known Japanese spies and sabateurs were scooped up along with the other west coast Japanese, and never knew that their espionage activities had already been discovered, due to Magic intercepts. If only those exact known spies had been arrested, the secret of Magic would have been blown, and the Japanese would have changed their codes.
But with the relocations, the secret of Magic was preserved, the secret which Eisenhauer and Marshall said shortened the war in the Pacific by at least three years, and saved hundreds of thousands of American casualties.
(And remember, we were not the only ones racing to unlock the secret of the atom, so three years must be seen to mean before Nazi or Imperial Japanese atomic bombs were developed.)
And please also go up-thread a few and read my comparison to the "allowed" bombing of Coventry, to preserve the secret of MK Ultra. If Churchill had "saved" those citizens of Coventry, but thereby blown the secret of Ultra, the war would have dragged on years longer, at a cost of millions more dead.
For one example, Ultra intercepts were used to destroy the German submarine wolfpacks in detail. Without Ultra, the Atlantic convoy system might have collapsed during 1942.
In war, sometimes leaders must take hard decisions.
Tell me what you think about the morality of sacrificing Coventry to save Ultra, and win WW2 in Europe and save millions of lives.
Then give me your arguments about the morality of relocating the west coast Japanese to save Magic, and win WW2 in the Pacific. At least they weren't blown to bits, like the innocent civilians and children in Coventry.
Let's see their names, and what happened to them in the end.
Locking up children in places like Manzanar DID not protect the information you allege. Stealing their parent's property and selling it to Hollywood bigshots did not advance the cause.
You will have to do an awful lot better ~ BTW, we've been through this kind of stuff before ~ the be-all, end-all story to prove the correctness of the internment ~ last time it was that all the Japanese-Americans lived near military bases, and that they had obviously done so to advance "spying".
As it turns out, almost of those military facilities were built AFTER JAs had begun farming land there.
As everybody knows Southern California is naturally a desert with few local water supplies. The JA farmers purchased or rented land where there was water so that they could farm. Deparment of War and Department of Navy ALSO sought out sites where there was water so that they could conduct their activities.
I would expect this won't be the last attempt to "prove" the rightness of a grievous wrong committed by Roosevelt and his minions.
Read my book, Manzanar. Learn the history of what you are misstating.
John / Billybob