ARTICLE IV

[1] Those who are citizens of the Philippines at the time of the adoption of this Constitution;

[2] Those whose fathers or mothers are citizens of the Philippines;

[3] Those born before January 17, 1973, of Filipino mothers, who elect Philippine citizenship upon reaching the age of majority; and

[4] Those who are naturalized in accordance with law.

Section 3. Philippine citizenship may be lost or reacquired in the manner provided by law.

Section 4. Citizens of the Philippines who marry aliens shall retain their citizenship, unless by their act or omission, they are deemed, under the law, to have renounced it.