Hidalgo vs. Marcos

The Court ruled that a referendum calling the electorate to vote on whether the incumbent President should continue in office as President and Prime Minister does not effect or propose a constitutional amendment, but merely constitutes a consultative exercise to ascertain public confidence in the incumbent. Because the 1976 constitutional amendments had already replaced the interim National Assembly with the Interim Batasang Pambansa, the President could not be compelled by mandamus to convene a defunct body, and the scheduled referendum was a valid exercise of authority under Amendment No. 7.

Petitioner Ernesto C. Hidalgo challenged Presidential Decree No. 1229, which scheduled a national referendum on December 17, 1977, to ask the electorate whether President Ferdinand E. Marcos should continue in office as incumbent President and serve as Prime Minister following the organization of the Interim Batasang Pambansa. The decree invoked the 1976 constitutional amendments, particularly Amendment No. 7, which authorized referenda to ascertain the will of the people on important national or local matters. Petitioner contended that the referendum effectively sought to amend the Constitution by merging the offices of President and Prime Minister indefinitely and bypassing the constitutional mandate for contested elections and parliamentary oversight. The Commission on Elections and the President were impleaded as respondents.

• Petitioner Ernesto C. Hidalgo filed a petition for mandamus and prohibition challenging Presidential Decree No. 1229, which called a national referendum on December 17, 1977.
• The referendum question asked the electorate: "Do you vote that President Ferdinand E. Marcos continue in office as incumbent President and be Prime Minister after the organization of the Interim Batasang Pambansa as provided for in Amendment No. 3 of the 1976 Amendments to the Constitution?"
• The decree relied on Amendment No. 7 of the 1976 constitutional amendments, which authorized the government to call referenda to ascertain the will of the people on important matters of national or local interest.
• Petitioner alleged that the referendum effectively sought to amend the Constitution by institutionalizing the merger of the presidential and prime ministerial offices for an indefinite period, thereby circumventing the constitutional framework for regular contested elections and parliamentary accountability.
• The 1976 constitutional amendments had previously abrogated the interim National Assembly and established the Interim Batasang Pambansa in its place.
• The President publicly stated that a "no" vote would prompt his resignation in deference to the people's will, while a "yes" vote would simply reaffirm his mandate without altering the constitutional text.

• Petitioner maintained that the President could not be compelled by mandamus to convene the interim National Assembly, but argued that the scheduled referendum under P.D. No. 1229 was unconstitutional because it functioned as a de facto constitutional amendment.
• Petitioner contended that the referendum question fell outside the scope of "important matters" contemplated by Amendment No. 7 and would improperly substitute a consultative vote for the constitutionally mandated contested elections and parliamentary oversight mechanisms.
• Petitioner further asserted that the 1976 amendments were invalidly ratified, rendering P.D. No. 1229 legally baseless and threatening to erode the parliamentary system and the separation between the symbolic presidency and the executive prime ministership.

• The Solicitor General defended the constitutionality of P.D. No. 1229, arguing that the referendum did not propose or effect a constitutional amendment but merely solicited the electorate’s reaffirmation or repudiation of confidence in the incumbent.
• Respondents maintained that the 1976 constitutional amendments had validly abrogated the interim National Assembly in favor of the Interim Batasang Pambansa, and that the referendum was expressly authorized under Amendment No. 7 as a legitimate consultative mechanism.
• Respondents emphasized that the President’s stated commitment to resign upon a "no" vote demonstrated that the exercise was purely political and consultative, leaving the constitutional text unaltered regardless of the outcome.

• Procedural: Whether the Supreme Court should give due course to a petition for mandamus and prohibition seeking to enjoin a scheduled national referendum, considering the impleading of the President and the Commission on Elections.
• Substantive Issues: Whether Presidential Decree No. 1229 and the December 17, 1977 referendum question constitute an unconstitutional amendment to the 1973 Constitution, and whether the President may be compelled by mandamus to convene the interim National Assembly.

• Procedural: The Court resolved not to give due course to the petition and dismissed it outright. The Court declined to pass upon the question of the President’s suability, noting that the Commission on Elections, the implementing agency for P.D. No. 1229, was properly impleaded, thereby providing a sufficient basis for adjudication without requiring a ruling on presidential immunity.
• Substantive: The Court held that mandamus would not lie to compel the President to convene the interim National Assembly, as that body had been abrogated and supplanted by the Interim Batasang Pambansa under the 1976 constitutional amendments. The Court further ruled that the December 17, 1977 referendum did not effect or propose a constitutional amendment. The question presented merely asked the electorate to reaffirm or repudiate confidence in the incumbent President and Prime Minister. A "yes" vote would reinforce Amendment No. 3, while a "no" vote would prompt the President’s resignation, neither of which alters the constitutional text. Accordingly, the referendum was a valid exercise of the consultative power authorized under Amendment No. 7, and P.D. No. 1229 suffered from no constitutional infirmity.

• Consultative Referendum vs. Constitutional Amendment — A referendum that merely solicits the electorate’s expression of confidence or lack thereof in an incumbent official, without altering the constitutional text or governmental structure, does not constitute an exercise of constituent power or a constitutional amendment. The Court applied this distinction to hold that the December 1977 referendum was purely consultative and authorized under Amendment No. 7 as a mechanism to ascertain the will of the people, rather than an attempt to amend the fundamental law.
• Abrogation of Constitutional Bodies by Subsequent Amendments — When a subsequent constitutional amendment expressly replaces a transitional governmental body, the original body ceases to exist and cannot be compelled to convene. The Court applied this principle to rule that the 1976 amendments had validly supplanted the interim National Assembly with the Interim Batasang Pambansa, rendering mandamus to convene the former legally untenable.

• "The question, 'Do you vote that President Ferdinand E. Marcos continue in office as incumbent President and be Prime Minister after the organization of the Interim Batasang Pambansa as provided for in Amendment No. 3 of the 1976 Amendments to the Constitution to be submitted to the people in the December 17, 1977 referendum, is in neither the nature nor the form of an amendment. It merely asks the people to either reaffirm or repudiate the confidence in the President which they had previously expressed.'" — The Court deployed this passage to distinguish the scheduled referendum from a constituent act, emphasizing that the exercise tested public confidence rather than altering the constitutional framework, thereby negating the claim that P.D. No. 1229 effected an amendment.

• Tolentino v. COMELEC — Cited by the dissenting justices to support the proposition that constitutional provisions on the amendment procedure are binding upon all departments of government and the people, and that departures from the prescribed amendatory process are repugnant to constitutionalism. The majority did not adopt this citation in its dispositive reasoning.
• Sanidad v. COMELEC — Referenced by the dissenting justices to argue that the 1976 amendments were invalidly ratified and that the President lacks constituent power. The majority implicitly rejected this position by upholding the validity of the 1976 amendments and the referendum authorized thereunder.

• 1976 Constitutional Amendment No. 1 — Provided for the creation of the Interim Batasang Pambansa in lieu of the interim National Assembly, forming the basis for the Court’s ruling that mandamus to convene the latter would not lie.
• 1976 Constitutional Amendment No. 3 — Designated the incumbent President as Prime Minister and authorized the continuation of his powers post-organization of the Interim Batasang Pambansa, serving as the substantive backdrop for the referendum question.
• 1976 Constitutional Amendment No. 7 — Authorized the government to call referenda at any time to ascertain the will of the people on important national or local matters, providing the constitutional basis for P.D. No. 1229.
• 1973 Constitution, Article VII, Section 1 & Article VIII, Section 13 — Cited by the dissent to highlight the constitutional structure separating the symbolic presidency from the parliamentary executive and to argue that referenda cannot substitute for parliamentary elections and votes of confidence.

• Justice Barredo — Concurred in the dismissal of the petition and reiterated his separate opinion in the companion case of De la Llana v. COMELEC (G.R. No. L-47245), aligning with the majority’s view that the referendum was constitutionally permissible and did not warrant judicial intervention.

• Justice Teehankee — Dissented on the ground that the 1976 amendments were invalidly ratified because the constituent power to propose and approve amendments belongs exclusively to the interim National Assembly or regular National Assembly, not the President. He further argued that the December 1977 referendum question fell outside the scope of “important matters” under Amendment No. 7, as it improperly sought to institutionalize the merger of the presidential and prime ministerial offices and effectively substituted a consultative vote for the constitutionally mandated contested elections and parliamentary oversight mechanisms.
• Justice Muñoz Palma — Concurred in Justice Teehankee’s dissent and added that the referendum would effectively amend the Constitution by concentrating executive and legislative leadership in one individual indefinitely, thereby nullifying the parliamentary system and the separate creation of the President and Prime Minister under the 1973 Constitution. She emphasized that accountability to the people must be achieved through the duly constituted National Assembly and regular electoral processes, not through ad hoc referenda that bypass the prescribed amendatory framework.