The federal government held land in trust for many tribes. Numerous claims cases had been presented to Congress because of failures in the government's management of such lands. There were particular grievances and claims due to the government's failure to provide for sustainable forestry. The Indian Claims Act of 1946 included a requirement that the Interior Department manage Indian forest resources "on the principle of sustained-yield management." Representative Edgar Howard of Nebraska, co-sponsor of the Act and Chairman of the House Committee on Indian Affairs, explained that the purpose of the provision was "to assure a proper and permanent management of the Indian Forest" under modern sustained-yield methods so as to "assure that the Indian forests will be permanently productive and will yield continuous revenues to the tribes."