A sealed document obtained by The New York Times says a Nevada commissioner has ruled against Rupert Murdoch’s effort to change his family’s trust to give his son Lachlan Murdoch control of his media empire and ensure Fox News maintains its conservative editorial slant.

Media magnate Rupert Murdoch is stepping down as the leader of both Fox News’ parent company and his News Corp media holdings, with his son, Lachlan, set to take his place.