it would find some way to conclude that, with regard to Australia, the clause is subject solely to Australian law. Canadian scholar Richard Toporoski theorised in 1998 that "if, let us say, an alteration were to be made in the United Kingdom to the Act of Settlement 1701, providing for the succession of the Crown... [i]t is my opinion that the domestic constitutional law of Australia or Papua New Guinea, for example, would provide for the succession in those countries of the same person who became Sovereign of the United Kingdom." In practice, when legislating for the Perth Agreement (see below), the Australian governments took the approach of the states requesting, and referring power to, the federal government to enact the legislation on behalf of the states (under paragraph 51(xxxviii) of the Australian Constitution) and the Commonwealth of Australia. Canada In Canada, where the Act of Settlement () is now a part of Canadian constitutional law, Tony O'Donohue, a Canadian civic politician, took issue with the provisions that exclude Roman Catholics from the throne, and which make the monarch of Canada the Supreme Governor of the Church of England, requiring him or her to be an Anglican. This, he claimed, discriminated against non-Anglicans, including Catholics, who are the largest faith group in Canada. In 2002, O'Donohue launched a court action that argued the Act of Settlement violated the Canadian Charter of Rights and Freedoms, but, the case was dismissed by the court. It found that, as the Act of Settlement is part of the Canadian constitution, the Charter of Rights and Freedoms, as another part of the same constitution, does not have supremacy over it. Also, the court noted that, while Canada has the power to amend the line of succession to the Canadian throne, the Statute of Westminster stipulates that the agreement of the governments of the fifteen other Commonwealth realms that share the Crown would first have to be sought if Canada wished to continue its relationship with these countries. An appeal of the decision was dismissed on 16 March 2005. Some commentators state that, as a result of this, any single provincial legislature could hinder any attempts to change this Act, and by extension, to the line of succession for the shared crown of all 16 Commonwealth realms. Others contend that that is not the case, and changes to the succession instituted by an Act of the