Alan Kooi Simpson (born September 2, 1931) is an American politician and member of the Republican Party, who served from 1979 to 1997 as a United States Senator from Wyoming. His father, Milward L. Simpson, was also a member of the U.S. Senate from Wyoming (1962–1967) and a Wyoming governor (1955–1959) as well.Simpson was appointed in 2010, to co-chair President Barack Obama's National Commission on Fiscal Responsibility and Reform with Democratic co-chair Erskine Bowles of North Carolina.