The Cause for Sainthood of Mother Teresa is still in the canonization stage and no date for her canonization has been set.
This is a person appointed to argue against the canonization of a candidate for sainthood according to canon law.
The three tests for sainthood in the Catholic Church are leading a life of heroic virtue, the occurrence of verified miracles through the intercession of the individual after their death, and the confirmation of their canonization by the Pope.
It originated in the Catholic Church. When someone is recommended for Sainthood, the church appoints 'advocatus Dei' as the promoter of the cause to represent the evidence to support the granting of sainthood. They also appoint a the 'advocatus diaboli' or Devil's Advocate to argue against the canonization. This is to insure that they have looked at all angles of the canonization from a theological standpoint.
I assume you are referring to Oscar Romero of El Salvador. In 1997, a cause for beatification and canonization into sainthood was opened for Romero, and Pope John Paul II bestowed upon him the title of Servant of God. The canonization process continues. He has passed the first stage towards canonization. In the next stage, after more investigations, he will receive the title of Venerable Oscar Romero. The entire process of canonization can sometimes take years or even centuries. This is especially true when the candidate for sainthood is controversial as is Oscar Romero.
Many are pushing for Charlene's canonization and a cause for sainthood petition is being prepared but as not yet been submitted for consideration. It can frequently take many years for a canonization to take place.
Saint Patrick was declared a saint before the canonization process was instituted so miracles were not required for sainthood.
Saints enjoy the blessings of canonization. ( comes from Canon Law and has nothing to do with firearms). some departed souls , not of Saintly merit, yet, are referred to as Blessed or Beata, this is an inferior degree, Canonization is full-fledged sainthood.
A group of University students in Paris founded the group.Blessed Frederick Ozanam, whose next step is canonization for sainthood
The early Christian community declared Paul to be a saint. There was no official canonization process in place at the time. However, dying as a martyr was an automatic ticket to sainthood.
There have been about 80 popes who are considered as saints. Some of these were declared saints in the early Church before the canonization process existed. Others are in various stages of canonization. See the complete list of popes and you will find all the popes who are saints, canonized saints and candidates for sainthood.
The Sacred Congregation for the Causes of Saints - headed by a bishop, archbishop or cardinal and includes a number of clergy and lay persons who investigate candidates for canonization.