jus soli; birthright citizenship
Legal principle that citizenship is determined by place of birth. Often contrasted with 血統主義 (jus sanguinis).
See also: 出生地主義
The United States is one of the countries that adopts jus soli.
I researched the difference between jus soli and jus sanguinis.
Compound of 生地 (birthplace) + 主義 (principle, doctrine).