Browning was elected Attorney General in 1968 and re-elected in 1972, 1976 and 1980. He was the first Attorney General to serve four terms in West Virginia's history. He is also the only West Virginia Attorney General to have served as president of the National Association of Attorneys General.
During his tenure, Browning established the Consumer Protection Division and reviewed and revised environmental and natural resources laws, rules and regulations. Also during his tenure, West Virginia sued the Pittston Coal Company for $100 million in damages for the February 26, 1972 Buffalo Creek Flood. GovernorArch A. Moore Jr. later settled the suit for $1 million.
Browning did not seek re-election in 1984, but rather ran for governor and lost a hotly contested three-way primary and left office in January 1985. He returned to his private practice and retired in 2008. Browning died on January 1, 2010, at Charleston Area Medical Center at 75.