From the White House press release:
Arvo Mikkanen: Nominee for the United States District Court for the Northern District of Oklahoma
Arvo Mikkanen serves as an Assistant United States Attorney for the Western District of Oklahoma, a position he has held since 1994. From 1988 to 1994, Mikkanen was an associate attorney at Andrews Davis Legg Bixler Milsten & Price. During that same time, he also served as a trial and appellate judge for Court of Indian Offenses and Court of Indian Appeals for the Kiowa, Comanche, Apache, Wichita, Caddo, Delaware, Fort Sill Apache, Ponca, Pawnee, Kaw, Otoe-Missouria, and Tonkawa Tribes. From 1991 to 1994, he served as the Chief Justice of the Cheyenne-Arapaho Supreme Court. From 1987 to 1988, Mikkanen served as a law clerk to the Honorable Robert M. Parker of the U.S. District Court for the Eastern District of Texas, and from 1986 to 1987, he served as a law clerk to the Honorable Lawrence S. Margolis of the U.S. Claims Court. He received his J.D. in 1986 from Yale Law School and his B.A. in 1983 from Dartmouth College.