Theodore Roosevelt actually said...
Now, Therefore, I, Theodore Roosevelt, President of the United States, by virtue of the power in me vested by section sixteen of said act of Congress of March 3, 1891, do hereby declare and make known that said land is hereby opened to settlement and restored to the public domain.
Context
Proclamation 504—Revocation of Withdrawal for Day County Seat in Cheyenne and Arapaho Indian Reservation
08/11/1903