The Priestly Fraternity of Saint Peter (; FSSP) is a traditionalist Catholic society of apostolic life for priests and seminarians which is in communion with the Holy See. The society was founded in 1988 under the leadership of 12 priests who were formerly members of the Society of Saint Pius X (SSPX), another traditionalist organization, but were unwilling to remain part of it following the Écône consecrations, which resulted in its bishops being excommunicated by the Holy See. Headquartered in Switzerland, the society maintains two international seminaries: the International Seminary of St. Peter in Wigratzbad-Opfenbach, Bavaria, Germany, and Our Lady of Guadalupe Seminary in Denton, Nebraska, United States. The society is officially recognized by the Holy See and its priests celebrate the Tridentine Mass in locations in 147 worldwide dioceses. Canonical status According to canon law, the FSSP is a clerical society of apostolic life of pontifical right. It is not, therefore, an institute of consecrated life and members take no religious vows, but are instead bound by the same general laws of celibacy and obedience as diocesan clergy and, in addition, swear an oath as members of the society. The fraternity's pontifical-right status means that it has been established by the Pope and is answerable only to him in terms of its operation (through the Dicastery for Institutes of Consecrated Life and Societies of Apostolic Life; prior to January 17, 2019, through the Pontifical Commission Ecclesia Dei), rather than to local bishops. A local bishop still governs the fraternity's work within his respective diocese. In this sense its organization and administrative reporting status are similar to those of religious orders of pontifical right (for example, the Jesuits or Dominicans). Mission and charism The FSSP consists of priests and seminarians who intend to pursue the goal of Christian perfection according to a specific charism, which is to offer the Mass and other sacraments according to the Roman Rite as it existed before the liturgical reforms that followed the Second Vatican Council. Thus, the fraternity uses the Roman Missal, the Roman Breviary, the Pontifical (Pontificale Romanum), and the Roman Ritual in use in 1962, the last editions before the revisions that followed the Council. The 2007 motu proprio Summorum Pontificum had authorized use of the 1962 Roman Missal by all Latin Church priests as an extraordinary form of the Roman Rite without limit when celebrating Mass "without a congregation". Its use