A prominent National Action Party, or PAN, lawmaker wants former Mexican President Vicente Fox expelled from the party for supporting a candidate from another party in the recent presidential race.

Congressman Oscar Martin Arce Paniagua, who chairs the leadership commission of the lower house of Congress, plans to ask the PAN’s National Executive Committee to take action against Fox, the commission said in a statement

Arce contends that PAN rules require members to support the party’s candidates, creating “sufficient arguments for (Fox) to be expelled from the party or to lose his party rights,” the statement said.