World War II prisoner exchange

The book-The Train to Crystal City-details a secret prisoner exchange program with Germany during the war.  The author is Jan Jarboe Russell.  Some German's and their families living in this country were taking in custody and held in a secret internment camp in Texas called Crystal City.  At some point during the war they were exchanged for Americans trapped in Germany when the war broke out; diplomats, businessmen and POW's.  The review states "Axis nationals living abroad in 13 Latin American countries were also deported to the United States, arrested for illegal entry and delivered to Crystal City..." based on same unproven idea that they might be engaged in pro Axis propaganda  and espionage.  The camp at 290 acres, held 6000 people from Dec 1942 till Feb 1948; some being American citizens by virtue of birth in the US.  The exchanges were known as "quiet passages" with many going to countries destroyed by war.  President Reagan issued a formal apology in 1988 for the internment of Japanese Americans and Congress offered restitution amounting to $ 37 million (I knew a man-a child at the time of internment-who got $ 20,000).  German and German Americans-some 10,000-were never issued an apology or restitution (as of the date of this review).  I believe we-history teachers-have all heard of the internment of Japanese Americans, but I have never heard of the this treatment of German Americans during the war.  Info from a book review in The Virginian Pilot "Shameful chapter for a Nation of Immigrants" by Megan McDonough of the Washington Post on May 24, 2015.