He studied law and was admitted to the bar in 1886. He also engaged in the real estate investment business in the area of Pierre, South Dakota. He was elected to the South Dakota House of Representatives in 1895 and 1897. He ran for the United States House of Representatives in 1898, won election, and remained in that position through 1907, losing the nomination for the 1906 election, although he won again in 1908 and remained in the House through 1915, serving as Minority whip from 1913 through 1915. In 1906 he was heavily involved in passing the Burke Act. In 1914, he received the nomination for the United States Senate seat from South Dakota and chose not to run for reelection to the House. He lost that Senate race.
He was appointed Commissioner of Indian Affairs in 1921 and served in that capacity until his resignation in 1929. He died in 1944, in Washington, D. C.
