While I was reading up on the Dakota pipeline issue and Standing Rock, I thought I read somewhere that Native American Trust Land (aka reservations that are held in a trust by the US government) can just be taken away by the state/us government if they decide that they need it for something, and don't need approval by the Native Tribe.
I can't find that article anymore and that question has become relevant in an essay I am writing about public transportation in Native American Reservations. I tried to find another source or anything, but I can never find anything that confirms or contradicts this.
Can someone help me with this question, or just point me towards sources where I could find info on this?
