GR No. 86564, August 1, 1989 (Constitutional Law – Loss of Citizenship)
FACTS: Herein petitioner, claiming for recognition as a Philippine citizen is a mayor-elect who, through his marriage with an Australian national, was naturalized and took an oath of allegiance as an Australian citizen. Said marriage was found to be bigamous and therefore was annulled. Petitioner claims that his naturalization made him only a dual national and did not divest him of his Philippine citizenship.
ISSUE: Whether or not petitioner was divested of his Philippine citizenship.
HELD: Yes, because Commonwealth Act No. 63 clearly stated that Philippine citizenship may be lost through naturalization in a foreign country; express renunciation of citizenship; and by oath of allegiance to a foreign country, all of which are applicable to the petitioner.
CASE EATER 