Acording to Wikipedia **” due to widespread abuse of the system and the lack of interest on the part of the heavily-Russified newly arrived immigrants to assimilate, Germany abolished the policy “** but doesn’t elaborate further
[https://en.wikipedia.org/wiki/Kazakhstan\_Germans](https://en.wikipedia.org/wiki/Kazakhstan_Germans)
what problems specifically did occur?
were a lot of people getting residency even thugh they had only distant German ancestors?
were there social problems/unrest caused by it?
were the immigrants unable or unwiling to learn German?
did a specific event cause a turn in public opinion?