"The Freedmen might be able to associate as a "separate tribe" and attempt to assert their participation in the earlier agreements, based their being part of "the Nation" at the time the agreements were made."

I think you are right.

How can you be a part of "the Nation" and then be voted out for no good reason. Its not as if the Freedman have committed some kind of crime. It seems their only crime is being former slaves. This is discrimination at its worst and should not be tolerated by the U.S. or any other tribal associations.

I still wonder about the wording of the ammendment. Seems to me it was meant to deceive the voters.