MANILA, Philippines - Twenty-eight Filipinos, including prominent activists, have filed an impeachment complaint against Philippine President Benigno Aquino III for implementing a major economic stimulus program that the Supreme Court has declared partly unconstitutional.

The complaint, filed Monday in the House of Representatives, accuses Aquino of violating the constitution and betraying public trust by funding projects outside the Congress-approved budget.

Lawmakers from three left-wing political parties endorsed the complaint, but it's unclear whether it will get enough support in a Congress dominated by Aquino allies.

Aquino has said that under the Disbursement Acceleration Program, enforced from 2011 to last year, government savings and non-allotted revenues were used to provide electricity to remote villages, build schools and finance other projects. He has stressed that the funds were not stolen, as alleged by critics.