“ These lands are held in trust for all the people, and in providing for their disposal Congress has sought to advance the interests of the whole country by opening them to entry in comparatively small tracts under restrictions designed to accomplish their settlement, development, and utilization. And when a suit is brought to annul a patent obtained in violation of these restrictions, the purpose is not merely to regain the title, but also to enforce a public statute and maintain the policy underlying it. ”

“ Testing them by the evidence, we discover no plain error, but, on the contrary, that they are amply sustained.
That the title was acquired by substituting the minimum price of the land for a part of the required five years of residence and cultivation, as permitted by the commutation provision of the homestead law, is not material, for the agreement to obtain the land for the benefit of another disqualified Causey from acquiring the title in either mode. ”

“ United States (Western P. R. Co. v. United States) 107 U.S. 526, 528, 27 L. ed. 621, 2 Sup. Ct. Rep. 802; Mullan v. United States, 118 U.S. 271, 276, 30 L. ed. 170, 172, 6 Sup. Ct. Rep. 1041; United States v. ”