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
Charles J. Guiteau probing the wound with unwashed hands and non-sterilized instruments, Garfield died on September 19, eleven weeks after being shot. Most modern physicians familiar with the case state that Garfield would have easily recovered from his wounds with sterile medical care, which was common in the United States a decade later, while Candice Millard argues that Garfield would have survived Guiteau's bullet wound had his doctors simply left him alone. However, Garfield's biographer Allan Peskin stated that medical malpractice did not contribute to Garfield's death; the inevitable infection and blood poisoning that would ensue from a deep bullet wound resulted in