Since 1989, Brian has focused on civil and criminal litigation. He was elected district attorney twice before entering the private practice of law in 1989. From 1984 to 1986 Brian was Assistant District Attorney/Assistant Corporation Counsel in Oneida County, Wisconsin. On June 19, 1986, he was appointed Oneida County District Attorney by Governor Tony Earl.
Brian grew up in Green Bay. He received a bachelor of business administration degree from the University of Wisconsin in 1981 (marketing major, with second major in political science), and received his juris doctor degree from the University of Wisconsin Law School in 1984.