Disomangcop vs. Datumanong

An ordinary statute that contravenes the devolved powers of an autonomous region under an Organic Act cannot validly take effect without plebiscite approval and is impliedly repealed by a subsequent Organic Act reaffirming such devolution; a department order duplicating devolved functions is invalid under the principle of lex specialis when it conflicts with a special executive order on devolution.

The 1987 Constitution ordained the establishment of autonomous regions in Muslim Mindanao and the Cordilleras to grant meaningful self-determination and decentralize power. R.A. 6734, the first ARMM Organic Act, was enacted and ratified in a plebiscite in 1989, with Lanao del Sur voting to join the ARMM. Pursuant to R.A. 6734, E.O. 426 was issued in 1990 to devolve the control, supervision, and functions of the DPWH within the ARMM to the Autonomous Regional Government (ARG). R.A. 9054, the expanded ARMM Organic Act, was later enacted and ratified in 2001, reaffirming the devolution of public works and infrastructure funds to the ARG.

• Constitutional and Statutory Framework: The 1987 Constitution mandated autonomous regions. R.A. 6734 was enacted, and Lanao del Sur voted to join the ARMM in the 1989 plebiscite. E.O. 426 subsequently devolved DPWH functions in the ARMM to the regional government.
• Issuance of D.O. 119: On May 20, 1999, the DPWH Secretary issued D.O. 119, creating the Marawi Sub-District Engineering Office with jurisdiction over infrastructure projects in Marawi City and Lanao del Sur—functions already devolved to the DPWH-ARMM.
• Enactment of R.A. 8999: On January 17, 2001, R.A. 8999 was signed into law, establishing the First Engineering District of Lanao del Sur under the national DPWH and appropriating funds therefor.
• Enactment of R.A. 9054: On March 31, 2001, R.A. 9054 lapsed into law, strengthening and expanding the ARMM Organic Act and reaffirming the devolution of public works and infrastructure funds to the regional government.
• Administrative Petition: On July 23, 2001, petitioners, officers of the DPWH-ARMM First Engineering District, wrote the DPWH Secretary seeking revocation of D.O. 119 and non-implementation of R.A. 8999. No action was taken.
• Instant Petition: Petitioners filed the present petition for certiorari, prohibition, and mandamus to annul the assailed issuances and compel the release of funds to the DPWH-ARMM.

• Violation of Autonomy: Petitioners argued that D.O. 119 was issued with grave abuse of discretion and violates the constitutional autonomy of the ARMM by duplicating functions already devolved to the DPWH-ARMM.
• Defective Enactment: Petitioners maintained that R.A. 8999 was not intelligently studied, lacked public hearing or consultation with the DPWH-ARMM, and was suspiciously timed for signature during the pendency of impeachment proceedings against then President Estrada.

• Validity of D.O. 119: Respondents countered that D.O. 119 was validly issued pursuant to E.O. 124, which reorganized the DPWH.
• Congressional Power: Respondents argued that the powers of the autonomous regions did not diminish the legislative power of Congress to enact R.A. 8999.
• Locus Standi: Respondents contended that petitioners lacked legal standing to assail the law and the department order, having no personal stake in the outcome of the controversy.

• Procedural:
  • Whether petitioners possess locus standi to challenge R.A. 8999 and D.O. 119.
• Substantive Issues:
  • Whether R.A. 8999 is unconstitutional for infringing on ARMM autonomy or otherwise inoperative/repealed.
  • Whether D.O. 119 is invalid for conflicting with E.O. 426 and the ARMM Organic Acts.
  • Whether respondents committed grave abuse of discretion in implementing R.A. 8999 and D.O. 119.
  • Whether mandamus lies to compel the release of funds and implementation of projects by the DPWH-ARMM.

• Locus Standi: Petitioners possess locus standi. The creation of duplicate offices directly threatens their duties and employment, constituting imminent and direct injury. Furthermore, the issue involves paramount public interest and transcendental significance, warranting a liberal stance on standing.
• Validity of R.A. 8999: R.A. 8999 never became operative and was impliedly repealed by R.A. 9054. An ordinary statute cannot amend an Organic Act, which requires plebiscite approval, without itself being subjected to a plebiscite. By seeking to recall devolved powers, R.A. 8999 patently contravened R.A. 9054, which reaffirmed the devolution of public works to the Autonomous Regional Government.
• Validity of D.O. 119: D.O. 119 is invalid. Under the principle of lex specialis derogant generali, E.O. 426—a special law devolving DPWH powers to the ARMM—prevails over E.O. 124, a general law on DPWH reorganization. D.O. 119, being based on E.O. 124, cannot rise higher than its source and was rendered functus officio by the ARMM Organic Acts.
• Grave Abuse of Discretion: Grave abuse of discretion was committed by implementing an inoperative/repealed law and a functus officio order. However, the alleged suspicious circumstances of R.A. 8999's signing and the lack of congressional consultation cannot be inquired into, as these pertain to the internal wisdom and rules of Congress, over which courts have no reviewing authority.
• Mandamus: Mandamus was properly denied. Under Section 20, Article VI of R.A. 9054, infrastructure funds allocated by the national government may only be appropriated through a Regional Assembly Public Works Act, which had not been enacted.

• Decentralization of Power vs. Decentralization of Administration — Decentralization of administration (deconcentration) delegates administrative powers to political subdivisions to make them more responsive and accountable, subject to the President's general supervision. Decentralization of power (devolution) involves an abdication of political power in favor of autonomous local government units, making them free to chart their own destiny with minimum intervention from central authorities and accountable to their constituency. Autonomous regions are granted political autonomy (decentralization of power).
• Implied Repeal by Irreconcilable Inconsistency — Occurs when two statutes cover the same subject matter, are clearly inconsistent and incompatible, and both cannot be given effect, such that one law cannot be enforced without nullifying the other.
• Lex Specialis Derogant Generali — A special provision or law prevails over a general one on the same subject. General legislation must give way to special legislation, and where two statutes are of equal theoretical application, the one designed specially for the case should prevail.
• Plebiscite Requirement for Organic Acts — Organic Acts for autonomous regions, having been ratified by a plebiscite, enjoy a status beyond ordinary statutes and cannot be amended by an ordinary statute without submitting such amendment to a plebiscite.

• "Decentralization of power, on the other hand, involves an abdication of political power in the favor of local government units declared to be autonomous. In that case, the autonomous government is free to chart its own destiny and shape its future with minimum intervention from central authorities."
• "The use of the word 'powers' in E.O. 426 manifests an unmistakable case of devolution."
• "R.A. 8999 has made the DPWH-ARMM effete and rendered regional autonomy illusory with respect to infrastructure projects."

• Limbona v. Mangelin — Followed. Defined the distinction between decentralization of administration and decentralization of power.
• Cordillera Broad Coalition v. Commission on Audit — Followed. Held that the creation of autonomous regions contemplates the grant of political autonomy, not just administrative autonomy.
• Leveriza v. Intermediate Appellate Court — Followed. Cited for the principle that special legislation prevails over general legislation (lex specialis).
• Tañada v. Angara — Followed. Cited for the duty of the judiciary to settle disputes where legislative action is alleged to have infringed the Constitution.
• Abbas v. Commission on Elections — Followed. Upheld the validity of R.A. 6734, the first ARMM Organic Act.

• Sections 15, 18, 20, Article X, 1987 Constitution — Mandate the creation of autonomous regions in Muslim Mindanao and the Cordilleras, require the enactment of organic acts ratified by plebiscite, and grant legislative powers over regional urban and rural planning development. Applied to show that public works is not excluded from the powers of autonomous regions.
• R.A. 6734 (First ARMM Organic Act) — Enumerated the powers of the ARG and provided for the devolution of national line agencies to the regional government. Applied as the basis for E.O. 426 and the plebiscite requirement.
• R.A. 9054 (Expanded ARMM Organic Act) — Strengthened and expanded the ARMM Organic Act, reaffirming the devolution of public works and requiring a Regional Assembly Public Works Act for infrastructure funds. Applied to impliedly repeal R.A. 8999 and deny the writ of mandamus.
• E.O. 426 — Placed the control and supervision of DPWH offices within the ARMM under the ARG. Applied as the special law that prevails over E.O. 124, rendering D.O. 119 invalid.
• E.O. 124 — Reorganized the Ministry of Public Works and Highways. Applied as the general law that must yield to the special law (E.O. 426) under the principle of lex specialis.

Puno (Acting C.J.), Panganiban, Quisumbing, Ynares-Santiago, Sandoval-Gutierrez, Carpio, Austria-Martinez, Carpio-Morales, Callejo, Sr., Azcuna, Chico-Nazario, and Garcia.