They have a higher order of right to secede than any state does, because they were a sovereign nation before joining the U.S. They actually existed as a nation even before the U.S. itself existed on this land. They actually precede the U.S. on this land.
So, I would say that they have a higher order of right to secede than any state does...
They didn't join the US, the US joined them....which is exactly my point.
Unless there is a State of Lakota, there can be no succession.
Only something that was part of a whole can leave it. The Lakotas never CEASED being a Nation, so they never became legally attached to the Constitution. They are ONLY bound to the federal government by the terms of their treaty.
I applaud your enthusiasm, but until you understand a few Constitutional facts, you're just dancing around a legal point that doesn't even exist.