Alston chaired the House Committee on Revisal and Unfinished Business during the 13th U.S. Congress. He was chairman of the Committee on Revisal and Unfinished Business. He served as chairman of the United States House Committee on Revisal and Unfinished Business. During his term he was Chairman of the Committee on Revisal and Unfinished Business. He served as chairman of the Committee on Revisal and Unfinished Business (Nineteenth Congress). He was the chairman of the United States House Committee on Revisal and Unfinished Business. He was chairman of the Committee on Revisal and Unfinished Business during the Seventh Congress. During the 11th Congress, Southard was Chairman of the Committee on Revisal and Unfinished Business. He served as chairman of the Committee on Revisal and Unfinished Business (Twenty-ninth Congress). He served as chairman of the Committee on Revisal and Unfinished Business (Twenty-sixth Congress). He served as chairman of the Committee on Revisal and Unfinished Business (Twenty-fifth Congress). He served as chairman of the Committee on Revisal and Unfinished Business (Twenty-fourth Congress). He served as chairman of the Committee on Revisal and Unfinished Business (Twenty-third Congress). He was chairman of the Committee on Revisal and Unfinished Business (Twenty-second Congress). His work was published in 1791 as "Iredell's Revisal".