Germany's ex-royals want their riches back, but past ties to Hitler stand in the way
https://edition.cnn.com/style/article/hohenzollern-prince-georg-prussia/index.html
Under the law that all of those who have supported Nazis are punished, there would be problems.
Today, except for neo-Nazis groups, most of those may have changed their minds. So, authorities should regulate a new law which exempts them from punishment 20 or 30 years after confirming the last support.