The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau pg.165

The Indian Bureau officials let the sales go through without informing the Indian recipients of the illegal prerequisite, and dozens of claims which can be characterized as unapproved rights of way easements across the private-property of Indians.  

The Blackfeet Tribe itself has interests in a number of claims characterized as trespass, and unapproved rights of way. Indian claimants left out of legitimate Blackfeet claims are the thousands of Blackfeet heirs of deceased Original Indian Allottees.   

In 1979 the Bureau of Indian Affairs, Assistant Secretary for Indian Affairs, Forrest Gerard testified under oath to Congress; “We are unable to locate many of the Indian heirs. The United States, of course, has a trust responsibility to them just as it does to recognized tribes, bands, or groups. The title issues in Indian land claims on Indian reservations are not subject to the federal statute of limitations. If the Indian claim does not survive the statute of limitations, there would be a suit against the United States Government as trustee for failure to carry out a fiduciary obligation, a breach of the trust obligation to bring an action on the Indian Claimants behalf.
-The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau  
pg.165