The federal government enacted the Species at Risk Act in 2002. This helped to fulfill Canada's obligations under the United Nations Convention on Biological Diversity, which Prime Minister Brian Mulroney signed at the 1992 Earth Summit in Rio de Janeiro. SARA also fulfilled some requirements of the National Accord for the Protection of Species at Risk, signed with the provinces in 1996. All of these initiatives, however, were driven by consistently high levels of public concern for threatened and endangered species.