How would a DNA test prove one's citizenship? Presidential hopeful Grace Poe two weeks ago underwent a DNA testing for two reasons: first, to prove that she's a natural born citizen of the Philippines; and second, to resolve a disqualification case slapped against her at the Senate Electoral Tribunal (SET). Senator Poe's camp earlier said if the DNA test showed she's born to Filipino parents than it will be a conclusive evidence that she's a natural born citizen and not "naturalized" as claimed by her critics. Her lawyer, Atty. George Garcia, said in a TV interview of a Supreme Court decision that "DNA tests are conclusive insofar as the courts are concerned. In fact it is already part of the rules of evidence," Garcia is talking about a decision penned by Supreme Court Senior Associate Justice and Senate Electoral Tribunal (SET) Chairman Antonio Carpio. Carpio earlier said that Poe, as a foundling, is considered a naturalized Filipin...