Most Native American in Oklahoma were transplants from the east. So they didn’t “own” the land to begin with.
Whatever. If they have a treaty, the US should honor it.
Since the RATs violated the original treaty, they should give them back all the Cherokee land in Tennesee, Georgia, North Carolina and Alabama as well.
Andrew Jackass marched 13,000 Cherokees from there to Oklahoma in the shameful "Trail of Tears"....4000 died from exposure, marching barefoot in an exceptionally cold winter.
Before forced relocation, the Cherokee Nation was a very advanced culture, having a written language and even a newspaper.