Two things: It is not the duty of the Church (local or otherwise) to "enforce the law".  It is the Church's duty to preach the Gospel.  It is not the Church, that is the priestly confessor, who absolves sins.  That ability is reserved to God alone and does not require the intervention of sacramental confession.  Whether a communicant is in a mortally sinful state or not cannot be deciphered by mere humans.  We are all of us sinners and all need the nourishment of the Sacrament.  Let ALL who sincerely desire to receive the Lord come to the altar.