MANILA - The transitory provisions in the draft federal charter might be a means of disqualifying Vice President Leni Robredo from succession, one of the framers of the 1987 Constitution said Friday.

President Rodrigo Duterte promised to step down from power once his administration establishes a federal government, but his consultative committee proposed to facilitate the election of transitory leaders who will preside immediately after a new constitution is ratified, said lawyer Christian Monsod.

• Duterte says no to leading transition government in shift to federalism
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"That ploy of saying we have to have a new transitional president is also a means of taking Vice President Robredo out of the picture," he told ANC's Early Edition.

• Charter review body to tackle Duterte's call for 'younger' transition leader

Last week, Duterte said Robredo was "incompetent" and he would not step down if she would assume his post.

• Duterte calls Robredo 'incompetent'

"My resignation is addressed to the people para makapili sila ng gusto nila...I don’t think she can ever be ready to govern a country. Reason? Incompetence. She’s not capable of running a country like this, Philippines," he said.

A member of the charter review body said Duterte will not be allowed to run for re-election in 2022, a revision made after the President sought a provision forcing him to step down during the transition period.

• Duterte barred from running in 2022, says ConCom member
• Charter change may lead to authoritarianism, Monsod warns