The Impeachment Process and the Role of the Supreme Court

The Impeachment Process

Impeachment is a way, provided by our Constitution, of removing certain high officials (like the Vice President) for serious wrongdoing. It is both legal (because it follows strict constitutional steps) and political (because elected officials vote on it). The key idea: it is not a free-for-all.

1.) Filing of a verified complaint (starting point)

A verified impeachment complaint is filed in the House of Representatives. Under the Constitution, it must be handled within strict timelines.

In the Supreme Court’s words, in Duterte v. House of Representatives, et al. (2025), the House has clear constitutional duties once a complaint is filed and endorsed—there is no open-ended discretion to delay it.

"Article XI, Section 3(2) of the Constitution clearly requires that a verified impeachment complaint be immediately put in the Order of Business within 10 session days from its endorsement. Neither the secretary general nor the speaker of the House is granted by the Constitution any discretion to determine when this period commences.”

2) House action and committee process

The House evaluates the complaint through its internal process (typically involving referral to the proper committee), and eventually votes on whether impeachment should move forward.

3) Articles of Impeachment and transmittal to the Senate

If the House approves, it transmits the Articles of Impeachment to the Senate.

4) Trial in the Senate (impeachment court)

The Senate sits as an impeachment court, hears the case, and votes.

5) Judgment and effects

If convicted, the penalty in impeachment is typically limited to removal and possible disqualification. (The official may still face separate criminal cases in regular courts, but that is a different process.) This concept of limited impeachment penalties is consistent with older constitutional designs. For example, the 1973 Constitution stated:

“Judgments in cases of impeachment shall be limited to removal from office and disqualification to hold any office of honor, trust, or profit under the Republic of the Philippines, but the party convicted shall nevertheless be liable and subject to prosecution, trial, and punishment, in accordance with law.”
— The 1973 Constitution (1973)

The Supreme Court’s Role: What It Can (and Cannot) Do

What the Supreme Court CAN do:

The Supreme Court has the duty to review legal and constitutional issues in impeachment when there is alleged violation of the Constitution or grave abuse of discretion. Impeachment is not purely political and is not immune from constitutional scrutiny.

“First, the impeachment process is primarily a legal and constitutional procedure but with political characteristics. It may be sui generis, but it is not a purely political proceeding. This means that the Bill of Rights, especially the due process clause and the right to speedy disposition of cases, applies to the entire impeachment process.”— Duterte v. House of Representatives, et al. (2025)

The Court also made the point plainly: even if impeachment is political in effect, the judiciary will not “look away” when constitutional limits are crossed.

“This Court, regardless of the political result, will not evade its duty to declare when an act is done with grave abuse of discretion amounting to an excess of jurisdiction of any department, organ, or office.”— Duterte v. House of Representatives, et al. (2025)

What the Supreme Court CANNOT do:

The Court does not decide whether an impeachable official is guilty or should be removed as a matter of political judgment. That job belongs to Congress (House initiates; Senate tries). The Court’s lane is narrower but crucial: constitutional compliance.

Because impeachment must follow constitutional procedure and respect constitutional rights, therefore the Supreme Court may invalidate impeachment steps that violate the Constitution, but it will not replace Congress as the impeachment tribunal. (Note that the Court, in this case, construes the constitutional process and reviews legal issues, without deciding who should be removed.)

The Most Recent Decision: Duterte v. House of Representatives (2025) and Why the Impeachment Was Struck Down

What happened?

The petitions asked the Supreme Court to declare unconstitutional the impeachment actions taken against Vice President Sara Z. Duterte, including issues about the one-year bar rule and due process.

What the Supreme Court ruled?

The Supreme Court declared the transmitted Articles of Impeachment barred and unconstitutional, and ruled that the Senate did not acquire jurisdiction to act as an impeachment court.

“The subsequent filing of the Articles of Impeachment under Article XI, Section 3(4) against Vice President Sara Z. Duterte, and its transmittal by the House of Representatives to the Senate of the 19th Congress is considered to be a separate and distinct mode of initiating the impeachment process. The Articles of Impeachment are DECLARED BARRED BY ARTICLE XI, SECTION 3(5) OF THE CONSTITUTION. Likewise, they are UNCONSTITUTIONAL and are deemed NULL and VOID AB INITIO.

Consequently, the Senate DID NOT ACQUIRE jurisdiction to constitute itself into an impeachment court.”— Duterte v. House of Representatives (2025)

Why the Court struck it down?

There are 2 main constitutional problems:

1) It violated the Constitution’s “one-year bar” rule

The Constitution limits how frequently impeachment proceedings may be commenced against the same official within a one-year period (the “one-year bar”). The Court, in this case, found that the Articles of Impeachment transmitted based on the challenged action fell within what the Constitution prohibits under the one-year bar. And because the one-year bar was violated, the impeachment action was constitutionally barred and void.

This is directly stated by the Court:

“Consequently, the Articles of Impeachment transmitted by the House of Representatives based upon the fourth impeachment complaint is barred by the one-year rule under Article XI, Section 3(5). It is also constitutionally infirm and therefore null and void ab initio.— Duterte v. House of Representatives (2025)

The Court even specified the earliest date when another impeachment proceeding could be commenced against her, applying the constitutional time-bar: no earlier than February 6, 2026.

2) It violated due process

Due process applies to impeachment proceedings. The respondent must be given a fair chance to be heard and to respond to evidence.

The Court found due process was violated because the draft Articles and evidence were not made available to the respondent, depriving her of an opportunity to be heard by House members. And because due process was violated, the Articles were constitutionally infirm and void.

“The Articles of Impeachment violated due process of law, as the draft and its accompanying evidence were not made available to the respondent, thereby denying her the opportunity to be heard by the members of the House of Representatives.”— Duterte v. House of Representatives (2025)

The Core Civic Lesson: The Supreme Court as Constitutional Guardrail

It is well established that the Constitution is the highest law of the land, and all branches of government, including Congress, must obey it.

When Congress’ impeachment actions violate constitutional limits (like the one-year bar) or constitutional rights (like due process), those actions become legally defective.

And since the Supreme Court is tasked to say what the law is and to check grave abuse of discretion, it may then declare unconstitutional impeachment actions void, even if impeachment is happening in a political arena. This is exactly what the Court did in the Sara Duterte impeachment controversy.

This is not “the Court interfering with politics.” This is the Court enforcing the rules everyone must follow, including the legislature.

Remember that Impeachment remains a congressional power, but it is NOT beyond the Constitution. The Supreme Court’s Duterte v. House of Representatives ruling underscores a basic democratic principle: no branch has the authority to commit unconstitutional acts and call them “political questions.” When the Constitution is violated, the Supreme Court can, and must, say so

The Impeachment Process and the Role of the Supreme Court