I just read the wikipedia article about it https://en.wikipedia.org/wiki/Indian_Child_Welfare_Act https://en.wikipedia.org/wiki/Indian_Child_Welfare_Act notice

I just read the wikipedia article about it https://en.wikipedia.org/wiki/Indian_Child_Welfare_Act https://en.wikipedia.org/wiki/Indian_Child_Welfare_Act notice that it does not say that the children didn't need to be removed from their family situations, just that a new policy was put in place to place them in foster care within Native American culture, contrary to what had been happening, so the extremely high percentage of children to whom this was happening which you refer to seems to be a serious problem in its own right.