The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau pg.167-168

Congress was also acutely aware that litigation in many instances would be unfair to void title holders who had purchased Indian property many years ago without the knowledge of the Indian claims, although they are chargeable by law with knowledge thereof. The Congressmen were also troubled by the serious problem of complicity on the part of the federal government in bringing about many improper transfers and encumbrances of Indian land (e.g., Secretarial transfer, Forced fee and Old Age Assistance claims): including 10,000,000 acres of trust allotments, the private property of the Indian claimants, who were the victims of the forced patents conspiracy.    

In Oversight Hearings on Statute of Limitations Before the Senate Select Committee on Indian Affairs, 96^th Cong., 1^st Sess. 3-13 (1979) Statement of Forrest Gerard, Assistant Secretary for Indian Affairs: “Litigation was thought inappropriate in these cases because the government would have to sue itself on behalf of Indian claimants.” Congress reacted to these concerns by adding Section 2 to Public Law 96-217 so that innocent Indian claimants would be given thorough consideration, even though judicial resolution of their claims might be ruled out.
-The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau  
pg.167-168