G.R. No. 243522 , February 19, 2019
Representatives Edcel C. Lagman, et al., Petitioners, vs. Hon. Salvador C. Medialdea, Executive Secretary, et al., Respondents.

FACTS

Petitioners, members of the House of Representatives, assailed the constitutionality of the third extension of martial law and the suspension of the privilege of the writ of habeas corpus in the entire Mindanao from January 1 to December 31, 2019. The initial proclamation was issued by President Duterte on May 23, 2017, citing rebellion by the Maute Group and Abu Sayyaf Group. Congress subsequently extended its effectivity first until December 31, 2017, and then a second time until December 31, 2018, with the Supreme Court upholding the sufficiency of factual bases for both the initial proclamation and the first extension.
The third extension was recommended by the Secretary of National Defense and the AFP Chief of Staff based on security assessments indicating a continuing rebellion by Daesh-inspired local terrorist groups and the Communist Party of the Philippines-New People’s Army (CPP-NPA). They argued that rebellion persisted, necessitating further military action to completely eradicate the threat, prevent its spread, and ensure rehabilitation. Petitioners contended the extension lacked sufficient factual basis, was disproportionate, and violated the constitutional limits on martial law.

ISSUE

Whether the third extension of the proclamation of martial law and suspension of the privilege of the writ of habeas corpus in Mindanao for the period of January 1 to December 31, 2019, is constitutional.

RULING

The Supreme Court, voting 9-4, dismissed the petitions and declared the third extension constitutional. The Court reiterated that its power of review over martial law extensions is limited to determining whether the President’s factual basis is sufficient, not whether it is correct. The standard is sufficiency, not wisdom. The Court found that the factual basis presented—comprising intelligence reports, military assessments, and documented incidents of violence and rebellion by various terrorist and communist groups in Mindanao—met the constitutional threshold.
The legal logic rests on the separation of powers and the political question doctrine in its limited sense. The determination of the necessity for martial law extension is primarily a political judgment vested in the Executive and Legislative branches. The Court’s role is merely to check for a complete absence of factual basis, which would constitute grave abuse of discretion. Here, the Executive submitted detailed justifications, and Congress, after deliberation, concurred. The Court held that the persistence of rebellion, as detailed in official reports, provided a sufficient factual anchor for the extension. The dissent argued for a stricter scrutiny standard, but the majority maintained its deferential approach, emphasizing that the constitutional design places the initial and extension authority with the political departments, subject only to judicial review for grave abuse of discretion, which was not found to be present.