“Ethnic German” migrants are people whose ancestors settled in Eastern Europe over the course of centuries and who identified as German because of their language or culture. When their descendants migrated to the Federal Republic of Germany, they were referred to as “ethnic German” migrants. Especially since the 1970s, many of those “ethnic German” migrants from Romania, Poland, or the Soviet Union migrated as (late) repatriates to the FRG. According to the principle of descent (jus sanguinis), they were immediately granted German citizenship.