It is a 2015 court case filed before the Senate Electoral Tribunal (SET) that sought to remove Grace Poe from the Philippine Senate—which would have effectively blocked her from running for president in the 2016 elections—because she was a foundling and therefore it was impossible to determine whether she was a natural-born citizen, a requirement for both offices.

[2][3][4][5][6] On August 6, 2015, a quo warranto petition was submitted by socio-political analyst and radio commentator Rizalito David to the SET to remove Poe from her seat in the Senate based on the assertion that, as a foundling of unknown parentage, she is not a natural-born Filipino citizen.

[13] On December 23, 2015, the Comelec en banc disqualified Poe from running as president in the 2016 elections for failing to meet the 10-year residency requirement but she said she would appeal the disqualification to the Supreme Court.

[16] Poe was affirmed to be a natural-born Filipino citizen from the day she renounced her American citizenship on October 20, 2010.

[17] In their judgment for the case, the SET declared that Grace Poe, a foundling, is a "natural-born Filipino", which allowed her to retain her seat in the Philippine Senate.