The principal proponent of the reproductive health (RH) bill in the House of Representatives vowed yesterday to block the renewed Charter change (Cha-cha) initiative unless the RH bill is passed. “If there is no RH bill, there will be no Cha-cha and no new tax measures,” Albay Rep. Edcel Lagman told a Quezon City news forum. He said he and co-authors of the family planning measure would question the quorum whenever the House tackles any Charter change-related measure or tax proposal. Lagman made the threat in the wake of reports that administration allies were bent on taking a vote on the proposal to convene a constitutional convention in preparation for Cha-cha during their last nine days of session. President Arroyo, on the other hand, wants her House allies to approve at least two tax bills.