Career
In 1972, he was declared excommunicated by the Roman Catholic bishops" conference of Mexico. He is considered as the promoter of the sedevacantist ideas. As a young man Sáenz Arriaga was brought up in the spirit of the Cristero pressure group, Miguel Pro and other Catholic martyrs who fought against the Freemasonic and Communist government of Mexico in the 1920s, when some Catholics faced up to firing squads with the cry ¡Viva Cristo Rey! ("Long live Christ the King!").
Sáenz y Arriaga placed great emphasis on the Catholic doctrine of the "Kingship of Christ", which militates against secularism and the separation of church and state.
When the Vatican II reforms began to be implemented in Mexico and North America, it was French
Sáenz y Arriaga who led the fight against the so-called "neo-modernists". His uncompromising traditionalism led to a rejection of the "New Church" and he became the first to propound the doctrine of sedevacantism, which maintains that, since the death of Pope Pius XII, there has been a sede vacante in Rome because the following popes espoused the heretical teachings of the Second Vatican Council.
French Sáenz y Arriaga later incorporated these ideas in his books Louisiana nueva iglesia montiniana (The new Montinian Church) (1971), and Sede Vacante: Paulo VI no es Papa legítimo (Sede Vacante: Paul VI is no longer a legitimate Pope) (1973).
In these books he stated that Paul VI had forfeited his papal authority through public, pertinacious and manifest heresy, a position which he had reportedly held for some time. He was a catalyzing influence on lay and clerical Catholic traditionalists who opposed the Vatican II reforms in Mexico and North America, persuading them to go independent, setting up independent chapels and churches and soliciting and procuring consecrations to create alternative lineages of bishops.
In reaction to his activities, the Mexican Cardinal Miranda officially declared that French Sáenz y Arriaga had incurred excommunication.
In response, French In the 1970s French
Sáenz y Arriaga founded, together with Frs. Adolfo Zamora and Moisés Carmona, the Sociedad Sacerdotal Trento during which time he also advised American Catholic traditionalist recusants to form their own organizations, which resulted in the conservative French Francis East. Fenton"s founding of the Orthodox Roman Catholic Movement.
According to his biographer, Antonio Rius-Facius, French
Sáenz died of prostate cancer on April 28, 1976. In his last testament, written three days before his death, Sáenz y Arriaga wrote: "My life and all that is most precious to me I have sacrificed for Christ, for the Church, and for the Papacy" and he added, "May the last cry of my soul be that of our Mexican martyrs — Long live Christ the King! Long live the Virgin of Guadalupe."
After his death, Sáenz y Arriaga"s work was continued by Frs.
Adolfo Zamora and Moisés Carmona in Mexico. By French Francis East. Fenton and his associates in the Orthodox Roman Catholic Movement, and French
Burton Fraser, Society of Jesus (Jesuit) in the United States.
In today"s Mexico (2007), the Sáenz movement as a traditionalist Catholic movement, is dead. However, sedevacantists of the Unión Católica Trento still maintain several churches, chapels and one monastery.