from the AFP:

Descendants of Sitting Bull, Crazy Horse break away from US

6 hours ago

WASHINGTON (AFP) — The Lakota Indians, who gave the world legendary warriors Sitting Bull and Crazy Horse, have withdrawn from treaties with the United States, leaders said Wednesday.

"We are no longer citizens of the United States of America and all those who live in the five-state area that encompasses our country are free to join us," long-time Indian rights activist Russell Means told a handful of reporters and a delegation from the Bolivian embassy, gathered in a church in a run-down neighborhood of Washington for a news conference. ... The new country would issue its own passports and driving licences, and
living there would be tax-free -- provided residents renounce their US
citizenship, Means said.

http://afp.google.com/article/ALeqM5iVC1KMTOgwiSoMQyT2LwZc9HyAgA