My Child will be a Citizen: Intergenerational Motives for Naturalization (Germany)

This paper argued that parents may have an intergenerational motive to naturalize—in order to secure citizenship for their children—and tested the predictions of the argument in a key case. A reform of German citizenship law in the year 2000 was expected to greatly increase the numbers of foreign residents joining the citizenry. But, although the reform made naturalization easier for many foreign residents, the introduction of jus soli citizenship for large numbers of children born in the country to foreign parents removed a key motive for parents to naturalize.

That is from a paper by Alex Street.