@Walter Hinteler,
Well he surely was never a German citizen as you try to claimed earlier on this thread unless that fine legal education of your can explain how you can ban the holder of citizenship from his own nation!!!! PS there was also no sign that anyone revoked any citizenship of his a not simple process anywhere in the world that I know of and not something you would do for minor charges in any case.
Next there was no indication he enter Germany between 1976 until he got drag back by the German government even if he did send ban materials into your nation over that time frame that I could find. If you have any links otherwise please post them.
Doing added research it seems that he was a big damn neo-nazis pain to both the US and Germany and a number of other EU nations and my conclusion is that both American and German government bureaucrats got together to have him drag off to Germany.
I can kind of understand the German bureaucrats doing so but it is a damn shame that he seems to had people in his own government working against him a government that have an obligation to protect him even if he were a neo-nazis pain.