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Advocates Philippines
SC Dismisses Petition To Compel Senate On Impeachment Proceedings
Photo credit: SC
The Supreme Court on Tuesday, April 29, 2026, dismissed a petition seeking to compel the Senate to immediately convene as an impeachment court in connection with the complaints filed against Vice President Sara Duterte.
The petition for mandamus, filed by Catalino Aldea Generillo Jr., asked the Court to order the Senate to act on the impeachment complaints without delay. The Supreme Court, sitting en banc, voted 14–0–1 to dismiss the petition.
In its ruling, the Court held that mandamus is not the proper remedy to compel the Senate to perform an act that falls within its constitutional discretion. As a co-equal branch of government, the Senate’s internal processes are generally beyond judicial interference, except in cases involving grave abuse of discretion.
The Court also explained that it could not control or direct the actions of the Senate through mandamus in matters that fall within its constitutional authority.
While the petition was considered under certiorari in the interest of equity, the Supreme Court found no showing that the Senate acted with grave abuse of discretion in not immediately convening during a session break.
The Court further clarified that the Constitution does not set a specific deadline for the Senate to begin impeachment trial proceedings. It noted that while the House of Representatives is bound by strict timelines in impeachment cases, the Senate is only required to “forthwith proceed,” which the Court interpreted to mean within a reasonable time depending on the circumstances of each case.
The decision emphasized that “forthwith” allows the Senate discretion to make necessary preparations before convening as an impeachment court, but also reminded that undue delay should be avoided to uphold public accountability.
The Court declared the petition moot, noting that subsequent developments had removed the basis for the requested relief. With no remaining live issue requiring judicial action, the Court said there was nothing left to compel the Senate to do.
Senior Associate Justice Marvic M.V.F. Leonen concurred in the result, agreeing that the petition had become moot.
The petition for mandamus, filed by Catalino Aldea Generillo Jr., asked the Court to order the Senate to act on the impeachment complaints without delay. The Supreme Court, sitting en banc, voted 14–0–1 to dismiss the petition.
In its ruling, the Court held that mandamus is not the proper remedy to compel the Senate to perform an act that falls within its constitutional discretion. As a co-equal branch of government, the Senate’s internal processes are generally beyond judicial interference, except in cases involving grave abuse of discretion.
The Court also explained that it could not control or direct the actions of the Senate through mandamus in matters that fall within its constitutional authority.
While the petition was considered under certiorari in the interest of equity, the Supreme Court found no showing that the Senate acted with grave abuse of discretion in not immediately convening during a session break.
The Court further clarified that the Constitution does not set a specific deadline for the Senate to begin impeachment trial proceedings. It noted that while the House of Representatives is bound by strict timelines in impeachment cases, the Senate is only required to “forthwith proceed,” which the Court interpreted to mean within a reasonable time depending on the circumstances of each case.
The decision emphasized that “forthwith” allows the Senate discretion to make necessary preparations before convening as an impeachment court, but also reminded that undue delay should be avoided to uphold public accountability.
The Court declared the petition moot, noting that subsequent developments had removed the basis for the requested relief. With no remaining live issue requiring judicial action, the Court said there was nothing left to compel the Senate to do.
Senior Associate Justice Marvic M.V.F. Leonen concurred in the result, agreeing that the petition had become moot.
Apr 29, 2026
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