The issue of holding bishops accountable for failing to protect children from sexual deviants has arrived squarely on Pope Francis' agenda.

The Vatican said the head of the pope's sex abuse advisory board, Cardinal Sean O'Malley, urged the pope and his other cardinal advisers to take up bishops' responsibility to protect children during one of their periodic meetings Wednesday.

O'Malley tabled the agenda item at the request of four members of the advisory board who traveled to Rome over the weekend for an emergency meeting with O'Malley over the appointment of Bishop Juan Barros in Osorno, Chile.

Victims of Chile's most notorious abuser say Barros witnessed their abuse decades ago and did nothing. They say that makes him unfit to lead a diocese where he'd be responsible for protecting kids.