On 22 May 1990 Haas then became bishop of Chur. Haas was appointed bishop of Chur by Pope John Paul II who bypassed the traditional right of the senior clergy of Chur to propose candidates to the pope, who in turn would approve one. These clergymen, however, proposed in this instance candidates who were not acceptable to the Holy Father on political and theological grounds. The pope therefore named his own candidate without taking counsel from the senior clergy. Many Catholics of the diocese rejected Haas both because of the irregular procedure of his appointment and because of Haas's conservative political and theological positions. A group of diocesan Catholics even attempted to prevent his entry into the cathedral. These tensions were never resolved, and Haas never succeeded in leading the diocese. In 1991, he made a series of controversial decisions regarding the localtheological college, St Luzi Seminary. Desiring it only serve candidates for the priesthood, he replaced the rector and dismissed all students who were not training for the priesthood. In response the Synodal Council of the Roman Catholic corporation of the Canton of Zurich cut its funding to the diocese. In March 1995, the president of the Synodal Council, Eugen Baumgartner said, "We have been waiting for a long time for the removal of Wolfgang Haas. I simply cannot understand it any more and ask myself how long must we wait for a decision from Rome. If ever there were a bishop who could not unite his diocese, it is Wolfgang Haas."
A resolution to the tension in Chur was reached when Pope John Paul II appointed Haas to the newly created archbishopric of Vaduz in neighboring Liechtenstein. Vaduz had been part of the diocese of Chur. Unusual for an archdiocese, it is no longer part of any bishops' conference and has no suffragan sees assigned to it. Consisting of 12 parishes and 23 priests, Vaduz is among the smallest archdioceses in the world. Since Haas' appointment the number of Catholics and clergy in Liechtenstein has increased, but slightly decreased as a percentage of the population. The solution of creating a new archdiocese and "promoting" Haas to it had been negotiated by Prince Hans-Adam II of Liechtenstein. The prince, a leading member of the Catholic lay organization Opus Dei, shares Haas's conservative political and theological views. Haas is also a strong supporter of the Priestly Fraternity of St. Peter, frequently ordaining its members.. As a result, some tensions continue now between Haas and non-traditionalist Catholics in Liechtenstein.
