Why Doesn't Every Tribe get a Settlement?

In the article, "Round Valley Tribes Receive $8.5M in Renumeration From the United States".  The ICTMN Staff writes about how on April 25, 2012, it was announced that the Round Valley Indian Tribe will receive $8.5 million. The article goes on to say that they are receiving this money because, "The historic settlement involving the Tribe – a Confederation of the Yuki, Concow Maidu, Little Lake, Pomo, Nomlaki, Wailaki and Pit River tribes – pertains to mismanagement of tribal lands, resources and monies dating back to 1856, when the Round Valley Indian Reservation was first established in Covelo, California."

“'Our people have historically endured irreparable trauma from the theft of our lands, the atrocious abuse of our ancestors, and the desecration of our traditions,” Tribal Vice President Joe Dukepoo said the release. “This is not a ‘true’ settlement because it does not include payment for all of the wrongdoing to us and our ancestors – such harms simply cannot be quantified. But it is an honorable effort by the United States to reconcile with the Tribe and to resolve our trust grievances dating back 156 years. In that way, the settlement is a significant milestone between Round Valley and the United States."


I have two opinions on this matter.  I personally think that it is great that the Native American's are finally be recognized for all of the pain and suffering that they have gone through.  I think that is a great step for the future.  However, I do not understand how only some tribes got money, and other tribes did not.  What qualified the tribes that got the money?  What was different from those tribes to all the other tribes?  What I just do not understand is why give all this money to some of the tribes, instead of giving a decent amount of money to all of the tribes in the United States?  Like I said, it just doesn't make sense to me.  I think that is a step in the right direction, but there are still a lot of steps that need to be taken.