The United Nations Declaration on Rights of Indigenous People.
Although not official international law, it carries moral and political force. It is a statement and agreement recognizing and empowering Indigenous people. It is also a commitment from the state, to address concerns specific to Indigenous people. Out of 158 countries, the United States was dead last to sign and refused to until 2010; President Obama adopted the Declaration at the White House Tribal Nations Conference.
Today, the U.S. is not living up to even the bare minimum requirements of the U.N. Declaration.