What is the Federal Government's Trust Responsibility Towards Removed and Unremoved Indian Nations?

The question of removed and unremoved Indian nations competing with each other arises here in New York in the context of the land claims. There is also a land claim which has been filed in Pennsylvania. There are no federally recognized tribes in Pennsylvania and thus, there is an issue of a removed tribe returning to exercise jurisdiction. This raises the next question: what kind of jurisdiction do returning removed tribes have, and, given that removal policy across the country, can these types of cases arise in any number of states?