G.R. No. L-31763 May 30, 1983
RAMON SIA REYES, petitioner, vs. DEPORTATION BOARD, HON. FELIX Q. ANTONIO, HON. FELIX V. MAKASIAR, HON. MANUEL V. REYES, and THE COURT OF FIRST INSTANCE OF MANILA, BRANCH XXIV, respondents.

FACTS

Petitioner Ramon Sia Reyes was charged before the Deportation Board for misrepresenting himself as a Filipino citizen. The Board issued a resolution declaring him a “resident Chinese national” subject to deportation proceedings. After his motion for reconsideration was denied, he filed a petition for certiorari and prohibition with the Court of First Instance of Manila to set aside the resolution, which was dismissed. He then elevated the case to the Supreme Court via a petition for review.
Petitioner anchored his claim to Filipino citizenship on several grounds. He argued that his father was naturalized, and he subsequently elected Filipino citizenship. He also invoked the principle of jus soli (citizenship by place of birth). Furthermore, he cited prior judicial and quasi-judicial rulings in his favor: a change of name proceeding and an acquittal in an election case where courts declared him a Filipino citizen, and a prior Deportation Board resolution dismissing a similar complaint.

ISSUE

The core issue is whether the petitioner is a Filipino citizen, thereby placing him beyond the deportation board’s jurisdiction.

RULING

The Supreme Court dismissed the petition, ruling that the petitioner is not a Filipino citizen. The legal logic proceeds from the applicable citizenship laws. Under the 1935 Constitution, which governed his birth and election, a legitimate child follows the citizenship of the father. Both of petitioner’s parents were Chinese subjects at his birth. His subsequent election of citizenship was legally inefficacious. He could not derive citizenship from his father’s later naturalization because he was no longer a minor when it occurred, as required by the naturalization law. He also could not elect citizenship under the constitutional provision for children of Filipino mothers, as his mother was not a Filipino at any relevant time.
The Court rejected the application of jus soli, clarifying that this American doctrine was never extended to the Philippines. Citizenship is determined by jus sanguinis (blood relationship). The prior favorable rulings do not constitute res judicata on the question of citizenship. The Supreme Court held that a declaration of citizenship made merely as an incident in a judgment (like in a change of name or acquittal case) does not attain finality on that specific issue. Crucially, the Court analogized that if a full naturalization decree can still be challenged and cancelled for fraud, then such incidental declarations carry even less weight and are not binding on the state in a subsequent deportation proceeding. Therefore, the Deportation Board correctly asserted jurisdiction.