In 1991, Getty's Progressive Conservatives formally severed ties with the Progressive Conservative Party of Canada, which was becoming increasingly unpopular under Mulroney. Getty also broke with Mulroney on a number of issues other than Senate reform, including the new federal Goods and Services Tax, which he fought unsuccessfully against implementing. His government also implemented legislation, against Mulroney's express wishes, that made English the only official language of Alberta. Despite these steps, Getty remained a supporter of the federal Conservatives (and not the Reform Party, to which many provincial P.C.s were defecting), whose unpopularity rubbed off on him.