The German POWs who chose to stay in the USA after the war all became some of the MOST patriotic Americans ever, on par with the Vietnamese who came after them. They had been subjected to horrific propaganda campaigns before and especially during their military service where Americans and Allies were portrayed as eldritch boogeymen. But after being captured by US forces and brought here to Arkansas, Missouri, Kansas, and other locations, they were completely in awe at the utter ridiculousness of what they had been told by the political commissars in the Wehrmacht. Sometimes, the best way to undo even a lifetime of brainwashing is by letting one just experience a 'trial period' of living in the supposed 'enemy land'. Hence why many countries of the Eastern Bloc during the Cold War were so hesitant to allow students, tourists, and diplomats to the USA, because they were afraid that many of them will refuse to go back home and that certainly was true with A LOT of them. The parents of Oleg Volk, founder of The High Road Inc. and one of the most ardent RKBA activists in our ranks, were able to come to the USA during a cultural exchange "tour" program and immediately applied for and were granted asylum from having to return to communist Lithuania, then under Soviet dominion.
ETA: "Trial periods" AKA "take a liberal to the range" does NOT apply to the modern leftist fuckstains though. These parasites live here, and yet they still have chosen to embrace ideologies that revolve around terrorism and murder.