Over the years his request has been supported by the Instituto Nacional de Antropología e Historia (INAH, National Institute of Anthropology and History), by Thomas Klestil, when he was president of Austria, and Heinz Fischer, current Austrian president and then president of the parliament.
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He was supported by Austrian legislators too, the members of the Social Democratic Party of Austria, led by Peter Schieder (chairman of the parliamentary committee of Foreign Policy), presented a proposal to return the headdress in 2005.