Tannenbaum lost his citizenship but wasn't deported anywhere. There were about three other procedings in the fifties, one successful, but it doesn't look like denaturalization and deportation were very seriously pursued in more than a handful of cases. Of course "kapo" has different connotations. Not all kapos -- Jewish or gentile -- were guards or killers.
Maybe I'm wrong about that. I was thinking about work details, who survived when others died. So far as I can find out a kapo was an overseer, and hence, in a way, a guard.