Balkanizing the nation by trying to institute special "separate but equal" courts for Islamic law (Sharia) is not the American way. It is Imperialism by Islam. They come as missionaries to establish a foothold here, not to participate in "cultural exchange". They do not permit our culture into their homelands.
I recently rewatched a documentary on Max Ernst, the artist. He was German born but moved to France. During WWI he was arrested on the grounds that German citizens posed a threat to the security of France. He was married but that did not matter. Someone spoke out on his behalf and he was released but he was eventually arrested again.
It is foolish to believe that only America ever instituted such a policy in wartime.
That's rather misleading as written. You make it sound as though Ernst was arrested and released, only to have the French change their minds and arrest him again.
The truth is that there was a great outcry over the arrest of Ernst and he was justly released as there was no cause for arrest save that he was of German descent.
He was arrested again in France, true. However it was the Gestapo that picked him up the second time, not the French. Luckily he escaped from the Germans and made it successfully to our shores.