Canada's Aboriginal peoples. The third, final constitutional conference on Aboriginal peoples was also unsuccessful. The Manitoba assembly was required to unanimously consent to a motion allowing it to hold a vote on the accord, because of a procedural rule. Twelve days before the ratification deadline for the Accord, Harper began a filibuster that prevented the assembly from ratifying the accord. Because Meech Lake failed in Manitoba, the proposed constitutional amendment failed. Harper also opposed the Charlottetown Accord in 1992, even though Assembly of First Nations Chief Ovide Mercredi supported it. Women's status and Bill C-31 According to the Indian Act, status Indian women who married men who were not status Indians lost their treaty status, and their children would not get status. However, in the reverse situation, if a status Indian man married a woman who was not a status Indian, the man would keep his status and his children would also receive treaty status. In the 1970s, the Indian Rights for Indian Women and Native Women's Association of Canada groups campaigned against this policy because it discriminated against women and failed to fulfill treaty promises. They successfully convinced the federal government to change the section of the act with the adoption of Bill C-31 on June 28, 1985. Women who had lost their status and children who had been excluded were then able to register and gain official Indian status. Despite these changes, status Indian women who married men who were not status Indians could pass their status on only one generation: their children would gain status, but (without a marriage to a full-status Indian) their grandchildren would not. A status Indian man who married a woman who was not a status Indian retained status as did his children, but his wife did not gain status, nor did his grandchildren. Bill C-31 also gave elected bands the power to regulate who was allowed to reside on their reserves and to control development on their reserves. It abolished the concept of "enfranchisement" by which First Nations people could gain certain rights by renouncing their Indian status. Erasmus–Dussault commission In 1991, Prime Minister Brian Mulroney created the Royal Commission on Aboriginal Peoples chaired by René Dussault and Georges Erasmus. Their 1996 report proposed the creation of a government for (and by) the First Nations that would be responsible within its own jurisdiction, and with which the federal government would speak on