Walter Smith Cox was a professor of law at what was then called Columbian University, known today as The George Washington University, in Washington, D.C.. On February 26, 1879, Cox was nominated by President Rutherford B. Hayes to a new seat on the United States District Court for the District of Columbia created by 20 Stat. 320. He was confirmed by the United States Senate on March 1, 1879, and received his commission the same day. During his service, he presided over the trial of Charles J. Guiteau, the assassin of President James A. Garfield. Cox retired from the federal bench on July
1880 United States presidential election for months, eventually declining to return either man to the Senate. Before that result was known, however, tragedy struck as Charles Guiteau, a mentally unstable man disappointed at being unable to secure a patronage appointment, shot Garfield on July 2, 1881. Garfield lingered for two-and-a-half months before dying on September 19, 1881. Vice President Chester A. Arthur, the New York Stalwart, was sworn in as president that night. Garfield's murder by a spoilsman inspired the nation to reform the civil service—and Arthur, erstwhile member of the Conkling machine, joined the cause. In 1883, a bipartisan majority in Congress passed the