Key legal question
Whether facilitated naturalization was obtained through false declarations or concealment of essential facts
Extracted holding
Yes. The appellant failed to rebut the presumption that she knew of her prior marriage and concealed a bigamous situation when marrying the Swiss spouse and applying for naturalization.
Extracted reasoning
The court relied on multiple indications of awareness of the prior marriage, including signed civil-status documents and the later Philippine judgment. The appellant did not make plausible that she could reasonably have believed the earlier marriage was dissolved. The rapid sequence of events and the concealed bigamy supported annulment under the Nationality Act.