Methods of Acquiring Citizenship (Art. IV)

1. Involuntary Method – acquired because of blood relationship or place of birth.

a. Jus sanguinis principle – Blood relationship is the basis for the acquisition of citizenship.

b. Jus soli principle – Place of birth serves as the basis for the acquisition of citizenship.

2. Voluntary Method – acquired through naturalization, which is an act of formally adopting an alien into a political body and vesting him rights and privileges of citizenship.