Diarmuid F. O’Scannlain was appointed by President Ronald Reagan as U. S. Circuit Judge for the Ninth Circuit in 1986. As a judge on the Ninth Circuit Court of Appeals, O’Scannlain has participated in more than 6,000 federal cases and has written hundreds of published opinions on a broad range of subjects. His professional interests include judicial administration and reform and continuing legal education. He serves as a faculty member at numerous federal appellate practice seminars for judges and attorneys, including New York University Law School’s Institute of Judicial Administration. O’Scannlain is an adjunct professor at Lewis & Clark Law School, where he teaches seminars on the Supreme Court and appellate practice. He served from 1969 to 1974 as Deputy Attorney General of Oregon, Public Utility Commissioner of Oregon and Director of the Oregon Department of Environmental Quality. He retired from the U. S. Army Reserve in 1978 as a Major after 23 years of Reserve and National Guard service. Judge O’Scannlain earned his Bachelor’s Degree from St. John’s University, his JD from Harvard Law School, and an LLM from the University of Virginia Law School. He has also received the Honorary Alumni award from Lewis & Clark Law School.