Congress intervened by designating the U.S. Forest Service as the pioneer grazing control agency. The Forest Service's controls represent not only attempts to protect a resource but also a social experiment designed to prevent the monopolization of rangelands by large outfits and to encourage small enterprises.

The Forest Service has become the undisputed leader in bringing order, rationality, and economic use to the range resources under government supervision. The problems and continuing challenges of the task emerge in these pages.