The status of Catholicism in Switzerland is complicated due to the existence of
Landeskirchen (Catholic cantonal churches), imposed by anti-clerical cantonal governments in the 19th century and organised along democratic lines, who control the application of funds collected through
church taxes.
Pope Gregory XVI's
encyclical letter of 1835,
Commissum divinitus, addressed this issue after the publication of the Swiss cantonal in the
canton of Aargau. The letter challenged the Swiss attempt to "allow secular power [to] dominate the Church, control its doctrine, or interfere so that it cannot promulgate
laws concerning the holy ministry, divine worship, and the spiritual welfare of the faithful". Most cantonally delineated Catholic church bodies are members of the umbrella
Roman Catholic Central Conference of Switzerland (RKZ, official names in , , , ). In the last thirty years, mainly during the conflict over the appointment of
Wolfgang Haas as Bishop of Chur, there have been discussions regarding a major reform of the structure of the Catholic Church in Switzerland, which would probably also lead to the establishment of a metropolitan see (probably in
Lucerne). However, discussions remain unresolved especially about the status of the
Canton of Zürich as part of the Diocese of Chur, the large but splinted extent of the Diocese of Basel and the lack of a Metropolitan see stay unresolved. ==Catholic lay organizations in Switzerland==