Various, Encyclopaedia Britannica, 11th Edition…
“ He is either elected by popular vote at the state elections for the district in which he resides and goes out of office with the political party for which he was elected, or he is appointed by the governor of the state for that district and for the same term. He represents the state in criminal prosecutions and also in civil actions within his district. There is a United States district attorney in each federal district, similarly representing the federal government before the courts.An attorney is an officer of the court which admits him to practise, and he is subject to its discipline. ”
