A/HRC/21/47/Add.2 13. At the legislative and administrative levels, Act No. 23302 of 1985 on the protection of indigenous communities established INAI, which is responsible for designing and implementing policies to benefit indigenous peoples. The Act and its implementing regulations recognize the legal status of indigenous communities and stipulate that this status is acquired by means of registration in the National Registry of Indigenous Communities. INAI is responsible for maintaining this registry and for coordinating with provinces that maintain their own registries of indigenous communities. In 2004, INAI established the Indigenous Participation Council as a means of involving indigenous peoples in the development and implementation of its programmes and policies, including those on land surveys and social services. 14. In 2006, in the light of repeated land conflicts between the supposed owners of private property and indigenous communities in various parts of the country, Congress enacted Act No. 26160. The Act suspended evictions of indigenous communities for four years, and charged INAI with the task of conducting a “technical-legal cadastral survey of the situation regarding ownership of the land occupied by indigenous communities” (art. 3). Act No. 26554 of 2009 extended the time limit set out in Act No. 26160 for another four years, until 2013. 15. The National Education Act (No. 26206) of 2006 establishes intercultural bilingual education in order to guarantee the constitutional right of indigenous peoples to an education that promotes indigenous cultures and languages. Act No. 25517 of 2001 provides for the return of the mortal remains of indigenous persons held in museums or in public or private collections to indigenous communities that claim them. Act No. 26522 of 2010 on Audiovisual Communication Services recognizes the right of indigenous peoples to identity-based communication, providing in particular for the establishment of radio stations within indigenous communities. INAI is the State body responsible for implementing these laws. 16. INAI is not the only institution relevant to indigenous peoples. The Office of the Secretary for Human Rights promotes human rights protection through the National Institute to Combat Discrimination, Xenophobia and Racism, and the Ombudsman, an autonomous institution, has paid special attention to the issue of indigenous peoples, visiting them in person to observe their living conditions and seeking resolutions to conflicts involving indigenous claims. 17. In an effort to strengthen the national legal framework, Argentina has ratified several international treaties that are of relevance to indigenous peoples, in particular ILO Convention No. 169, which it ratified in 2000. Argentina also voted in support of the United Nations Declaration on the Rights of Indigenous Peoples when it was adopted by the General Assembly in 2007. B. Provincial laws 18. Within the federal structure established by article 75, paragraph 17, of the Constitution, Congress has the authority to pass the laws necessary for the minimum protection of the rights of indigenous peoples, while the provinces can enact supplementary norms offering greater protection in this regard. Because the constitutional reforms concerning indigenous peoples are relatively recent, many aspects of the division of powers between the federal and provincial governments are still being worked out. the Environment and Sustainable Development, amparo appeal (8 September 2003). 6 GE.12-14947