I have almost finished a book by Nelson DeMille (he wrote "The Generals Daughter" among others) entitled "The Charm School" The plot concerns a facility in the Soviet Union (the book was written in the late 80's) that trains Russian operatives to be "Americans" and are then placed in high level positions in the US as American citizens able to spy on the US. The gist is these agents are trained to be able to blend in without question as to who they claim to be.
This has lead me to wonder if some of our more outspoken Anti American posters may be graduates of a real life "Charm School" since such establishments have been rumored to exist for decades.
https://www.kirkusreviews.com/book-r...n%20POW%20camp