Mabanag vs. Lopez Vito

The proposal of amendments to the Constitution is a political question conclusively determined by the legislative department, and the enrolled bill rule precludes judicial inquiry into the validity of the legislative process or the vote count once the measure has been duly authenticated by the presiding officers of both houses.

Following the April 1946 elections, the First Congress of the Republic considered a resolution proposing an amendment to allow American citizens equal rights with Filipinos in the exploitation of natural resources and operation of public utilities. The proposal required approval by 3/4 of all members of the Senate and House of Representatives voting separately under Article XV of the Constitution.

N/A — Original petition for prohibition filed directly with the SC.

• Petitioners: Eight senators (including Alejo Mabanag), seventeen representatives, and presidents of the Democratic Alliance, Popular Front, and Philippine Youth Party
• Respondents: Members of the Commission on Elections, Treasurer of the Philippines, Auditor General, and Director of the Bureau of Printing
• On September 18, 1946, Congress adopted a joint resolution proposing the amendment
• Senate Vote: 16 in favor, 5 against
• House Vote: 68 in favor, 18 against
• Excluded Members:
  • Three senators (Jose O. Vera, Ramon Diokno, Jose E. Romero) were suspended by the Senate and barred from voting
  • Eight representatives (including Luis Taruc, Jesus B. Lava, Alejo Santos) were not allowed to take their seats or vote (pending election protests)
  • Membership Count: Senate had 24 members; House had 98 members (96 after two resignations)
  • Mathematical Issue: If the 11 excluded members were counted in the denominator, the votes (16/24 and 68/96) would not reach 3/4
  • Congress passed Republic Act No. 73 calling a plebiscite for March 11, 1947, and appropriating P1,000,000 for expenses
  • Petitioners filed for prohibition to enjoin respondents from enforcing the resolution and RA 73

• The resolution was not approved by 3/4 of all the members of each House as mandated by Article XV, Section 1 of the Constitution
• The 3 suspended senators and 8 excluded representatives were duly elected and qualified members; their exclusion rendered the vote count unconstitutional
• The certification by presiding officers was demonstrably false and should not be given conclusive effect
• The SC had jurisdiction to determine whether constitutional requirements for amendments were complied with
• The journal entry rule (not the enrolled bill rule) should apply, allowing courts to examine legislative journals to verify the vote

• The validity of the amendment proposal presents a political question beyond judicial review
• The enrolled bill rule makes the duly authenticated resolution conclusive proof of its due enactment and the vote count; courts cannot go behind the certification of the presiding officers
• The excluded members were not "qualified members" capable of being counted for purposes of Article XV
• The political question doctrine and separation of powers bar judicial interference with internal legislative proceedings

• Procedural Issues: Whether the SC had jurisdiction over the petition; whether petitioners had legal personality to sue
• Substantive Issues:
  • Whether the proposal of constitutional amendments is a justiciable controversy or a non-justiciable political question
  • Whether the enrolled bill rule precludes judicial inquiry into whether the resolution obtained the required 3/4 vote
  • Whether the 3/4 vote requirement was satisfied when 11 members were excluded from the count

• Procedural: The SC had jurisdiction over the petition for prohibition. Petitioners had legal personality: the legislators had a direct interest as members of Congress, and the party presidents/citizens had standing as taxpayers concerned with the illegal expenditure of public funds for the plebiscite.
• Substantive:
  • The proposal of amendments is a political question not subject to judicial review. Citing Coleman v. Miller, the SC held that if ratification is a political question, proposal must also be political, as both are complementary steps in the amendment process.
  • The enrolled bill rule applies. A duly authenticated resolution (signed by presiding officers and secretaries) is conclusive proof of its provisions and due enactment. The SC cannot examine the journals to contradict the certification that the resolution passed by the required 3/4 vote.
  • The SC declined to rule on whether the excluded members should be counted in the 3/4 computation, deeming it unnecessary given the political question doctrine and the enrolled bill rule.

• Political Question Doctrine — Matters involving the exercise of sovereign legislative authority committed by the Constitution to a coordinate branch (Congress) are not justiciable. The proposal of amendments is a highly political function performed by Congress in its sovereign legislative capacity, committed to its charge by the Constitution itself, and independent of executive or judicial intervention.
• Enrolled Bill Rule — A duly authenticated bill or resolution (signed by the presiding officers and secretaries of both houses) imports absolute verity and is binding on the courts. It constitutes conclusive proof of the provisions of the act and its due enactment. Courts cannot go behind the enrolled bill to examine journals or other evidence to determine whether the measure was actually passed by the required vote. This rule is founded on:
  • Respect due to a co-equal and independent department of government
  • Practical necessity for certainty in the law
  • Avoidance of inquisition into legislative conduct
  • Separation of Powers — The judiciary cannot supervise or interfere with the internal proceedings of the legislature regarding the amendment process, as this would violate the separation of powers.

• "Political questions are not within the province of the judiciary, except to the extent that power to deal with such questions has been conferred upon the courts by express constitutional or statutory provision."
• "If ratification of an amendment is a political question, a proposal which leads to ratification has to be a political question. The two steps complement each other in a scheme intended to achieve a single objective."
• "Proposal to amend the Constitution is a highly political function performed by the Congress in its sovereign legislative capacity and committed to its charge by the Constitution itself."
• "The rule against going behind the enrolled bill is required by the respect due to a coequal and coordinate and independent department of the government."

• Coleman v. Miller (307 U.S. 433) — US SC case holding that the efficacy of ratification by state legislatures is a political question; adopted as controlling precedent for the proposition that the entire amendment process (proposal and ratification) is political and non-justiciable
• United States v. Pons (34 Phil. 729) — Distinguished; SC noted it examined journals only because no authenticated copy was presented, and expressly passed over the question of the enrolled bill's conclusiveness
• Green v. Weller (32 Miss. 650) — Cited for the proposition that the means for changing the Constitution should receive a construction that does not trammel the exercise of the right

• Article XV, Section 1 of the 1935 Constitution — Required amendments to be proposed by a vote of 3/4 of all members of the Senate and House of Representatives voting separately
• Section 313 of Act No. 190 (Code of Civil Procedure), as amended by Act No. 2210 — Provided that copies of acts signed by presiding officers and secretaries constitute conclusive proof of the provisions and due enactment thereof (statutory basis for the enrolled bill rule)

• Justice Bengzon (with Padilla, J.) — Agreed with dismissal but maintained that courts have jurisdiction over constitutional amendments. Resolved the case by applying the enrolled bill rule and examining the legislative journals, finding that the journals showed the required 3/4 vote was obtained based on the actual membership present and voting (21 senators, 88 representatives), excluding the suspended/excluded members.
• Justice Hilado — Concurred in the result but dissented from the majority's obiter dictum that the affirmative votes would have been short if suspended members were counted. Argued that suspension is a political question, and suspended members cannot be treated as "voting" members under Article XV since they could not participate.

• Justice Perfecto — Argued the case was justiciable; the enrolled bill rule should not apply when the certification is demonstrably false; the mathematical computation (16/24 and 68/96) clearly showed the 3/4 requirement was not met; advocated for the journal entry rule to verify the actual vote.
• Justice Briones (with Feria, J.) — Extensive dissent arguing that the political question doctrine does not apply to violations of specific constitutional requirements; the amendment process is judicial, not political. Criticized the enrolled bill rule as monarchical and inappropriate for a democracy, advocating instead for the American "journal entry rule." Provided detailed analysis of US state and federal precedents demonstrating that courts routinely review the procedural validity of constitutional amendments.