43 U.S.C. § 894
Adjustment of land grants to railroads
The Secretary of the Interior is authorized and directed as of March 3, 1887 , to adjust, in accordance with the decisions of the Supreme Court, each of the railroad land grants made by Congress to aid in the construction of railroads and theretofore unadjusted.
( Mar. 3, 1887, ch. 376, § 1 , 24 Stat. 556 .)