Henry Moore Teller (May 23, 1830February 23, 1914) was a U.S. politician from Colorado, serving as a US senator between 1876–1882 and 1885–1909. He also served as Secretary of the Interior between 1882 and 1885. He strongly opposed the Dawes Act, intended to break up communal Native American lands and force assimilation of the people. He accurately said that it was directed at forcing the Indians to give up their land so that it could be sold to white settlers.