Is "None" the answer that would satisfy you? You seem to be implying a slippery slope, but you come off as saying "what's non-trivial shouldn't be attempted."
If you're actually interested in answering that very big question–which, I suspect, you might not be, only ornery and combative–you would do well to read what scholars have written on it. You might even Google the simplest component of the subject.
Here is a start: "US approves $4.5 billion in reparations to Indians, black farmers"[0]
Answers along the lines of "here's a start" are unsatisfying, because the question is where the end is. It's like asking what the ingredients for a loaf of bread are and hearing "well a tablespoon of flour is a start".
I'm not aware of any scholar who's said "after we do X, Y, Z, the wrongs of history will be righted and we won't need any further efforts to make it up to Native Americans". (If you know someone who did, I'd be excited to see what they have to say!)
Some ideas are best conveyed through richer media. Don't hesitate to read Indigenous People's History of the United States, and stop demanding bread recipes on fortune cookie slips.
Truly? I do not. Of course there is an end; equity and the abolition of continuing systems of oppression.
I am honestly blown away that there exists in your mind some set of beliefs which, paired with what I've said, imply I suggest there is no end. Please, what are they?
If you're actually interested in answering that very big question–which, I suspect, you might not be, only ornery and combative–you would do well to read what scholars have written on it. You might even Google the simplest component of the subject.
Here is a start: "US approves $4.5 billion in reparations to Indians, black farmers"[0]
0. http://www.digitaljournal.com/article/301242