Canon law limits the Catholic priesthood to baptized men; Pope John Paul II reaffirmed this in a 1994 apostolic letter, "Ordinatio Sacerdotalis" ("Priestly Ordination").
This is unbelievable considering that this line appeared in a story by the Catholic News Service. Canon law has nothing to do with this issue at all. The article also said:
A Swiss church leader said a lay Catholic theologian faces automatic excommunication after she claimed she was ordained to the priesthood June 24.
How in the world can you face automatic excommunication for an act already done? If an act occured such a penalty it would indeed be automatic upon the action that invokes it. Though in this case of simulating a sacrament would not be considered an act that incurs automatic excommunication. In the past these acts were usually soon followed by a formal decree of excommunication by their diocesan bishop.