Alan Kooi Simpson (September 2, 1931 – March 14, 2025) was an American politician from Wyoming who served as a member of the Wyoming House of Representatives representing Park County, Wyoming from 1965 to 1977 and as a member of the United States Senate from 1979 to 1997. Simpson was Republican whip of the U.S. Senate from 1985 to 1995, serving as majority whip of the U.S. Senate from 1985 to 1987. He also served as co-chair of the National Commission on Fiscal Responsibility and Reform (often referred to as Simpson–Bowles) with Democratic co-chair Erskine Bowles of North Carolina.
Born in Denver, Simpson completed his undergraduate and law school studies at the University of Wyoming. He served in the Wyoming House of Representatives from 1965–1977 before being elected to the U.S. Senate in 1978. After serving three terms, Simpson declined to seek re-election in 1996. After leaving office, Simpson practiced law and taught at multiple universities. He also served on the Continuity of Government Commission, American Battle Monuments Commission, and Iraq Study Group. He was a vocal proponent of amending the Constitution of the United States to overturn Citizens United v. FEC (2010) and allow Congress to set spending limits on campaign finance.
Simpson was born in Denver, Colorado, on September 2, 1931, the son of Milward Simpson and the former Lorna Kooi. His middle name, Kooi, comes from his maternal grandfather, whose parents were Dutch immigrants. Simpson had an older brother, Pete Simpson, a historian and former administrator at the University of Wyoming in Laramie, Wyoming, who served in the Wyoming House of Representatives from 1981 to 1984, having represented Sheridan County, Wyoming, while he was then an administrator at Sheridan College. Pete Simpson was the 1986 Republican gubernatorial nominee, having sought the office while his younger brother was serving in the U.S. Senate.
Simpson had several run-ins with the law during his youth, later remarking, "I was just dumb and rebellious and stupid. And a different person," adding that "you're not who you are when you're 16 or 18. You're dumb and you don't care, and you think you are eternal." For the 2010 Supreme Court of the United States case Graham v. Florida on the constitutionality of sentencing juveniles to life imprisonment without parole for non-homicide offenses, Simpson submitted an amicus curiae brief explaining his own troubled youth:
In Simpson's words to this Court, "I was a monster." One day in Cody, Wyoming, when Simpson was in high school, he and some friends "went out to do damage." They went to an abandoned war relocation structure and decided to "torch" it. They committed arson on federal property, a crime punishable by up to twenty years in prison if no one is hurt and punishable by up to life in prison if the arson causes a person's death, Luckily for Simpson, no one was injured in the blaze. Simpson not only played with fire, but also with guns. He played a game with his friends in which they shot at rocks close to one another, at times using bullets they stole from the local hardware store. The goal of the game was to come as close as possible to striking someone without actually doing so. Again, Simpson was lucky: no one was killed or seriously injured. Simpson and his friends went shooting throughout their community. They fired their rifles at mailboxes, blowing holes in several and killing a cow. They fired their weapons at a road grader. "We just raised hell," Simpson says. Federal authorities charged Simpson with destroying government property and Simpson pleaded guilty. He received two years of probation and was required to make restitution from his own funds.
Alan Simpson graduated from Cody High School in Cody, Wyoming in 1949 and attended Cranbrook School in Bloomfield Hills, Michigan, in 1950 for a postgraduate year. He graduated from the University of Wyoming with a Bachelor of Science degree in 1954. Like his brother, he was a member of the university's Alpha Tau Omega fraternity. Simpson served in the United States Army in Germany from 1955 to 1956 with the 10th Infantry Regiment of the 5th Infantry Division and the 12th Armored Infantry Battalion of the 2nd Armored Division.
After graduating from the University of Wyoming College of Law in 1958, he joined a private law firm and eventually became the city attorney of Cody, Wyoming. Simpson was first elected to the Wyoming House of Representatives in 1964. During his tenure, Simpson represented Park County and served as the speaker pro tempore of the Wyoming State Legislature. He resigned on November 10, 1977, to prepare to run for the U.S. Senate in 1978.
Simpson was elected to the United States Senate on November 7, 1978, but was appointed to the post early on January 1, 1979, following the resignation of Clifford Hansen, former Governor of Wyoming from 1963 to 1967 who had succeeded Milward Simpson, Alan's father who was Governor of Wyoming from 1955 to 1959, in the seat. From 1985 to 1995, Simpson was the Republican whip, assisting Republican leader of the United States Senate Bob Dole from Kansas. He was chairman of the Senate Veterans' Affairs Committee from 1981 to 1985 and again from 1995 to 1997 when Republicans regained control of the Senate. He also chaired the Immigration and Refugee Subcommittee of Judiciary, Nuclear Regulation Subcommittee, Social Security Subcommittee, and Committee on Aging.
Simpson was characterized as a moderate conservative by The New York Times upon his death in 2025. Contemporaneously he was known as a hardline conservative who was loyal to Ronald Reagan's policies. He supported the abortion-rights movement and in 1995 and 1996, he voted against a ban of late-term abortions that only exempted life-threatening conditions, rather than all physical health needs. However, he opposed federal funding for abortions by supporting the Hyde Amendment. In 2013, Simpson stating that abortion should not be a political issue in a party that believes in "government out of our lives," "the right to be left alone," and "the precious right of privacy".
In the early 1980s, illegal immigrants were prohibited from working in the United States, but employers were not penalized for hiring them as unreported employment. Alongside Democratic Party United States House of Representatives member Peter W. Rodino from New Jersey, Simpson was the main force behind the Immigration Reform and Control Act of 1986, which included a provision prohibiting the intentional hiring of illegal immigrants, while providing legal status to those that arrived before 1982.
As a ranking minority member of the Senate Subcommittee on Immigration and Refugee Affairs in 1987, he drew criticism for calling Hmong who had fought for the United States fleeing to the US in the aftermath of the Vietnam War "the most indigestible group in society" for their perceived inability to adhere to white American norms, which Hmong American scholar Kou Yang said was at the time the "worst of all" comments on Hmong. Rubén G. Rumbaut highlighted the irony of Simpson's derogatory characterization of Hmong in a 1999 study that showed that Hmong students in San Diego schools "outperform[ed] all native-born English-only American students". Reflecting on his work for the American Sociological Association's Contexts, Rambaut said, "One thing I know is that popular conceptions about immigrants and their assimilation don’t square with the facts." Rambaut saw Simpson's use of the word "indigestible" as indicative that Simpson was imagining an assimilation where Hmong were absorbed into the more desirable Anglo-Saxon race. Natsu Taylor Saito concurred: "[Simpson thinks] they [Hmong] should be fully 'digestible'; their purpose is to nourish settler society, not to change it." Dwight Conquergood remarked Simpson's comments were typical of Western visitors to the largest Hmong refugee camp in Thailand, the Ban Vinai Refugee Camp. "Instead of seeing the Hmong as struggling within a constraining context of historical, political, and economic forces that have reduced them from proud, independent, mountain people to landless refugees, the Hmong are blamed for their miserable condition." Shelly R. Adler likened Simpson's comments to an article in The New York Times that asserted the Hmong were “the most primitive refugee group in America"—to which Paul Pao Herr, a Hmong reader of the paper responded, "[E]vidently we were not too primitive to fight as proxies for the United States troops in the war in Laos". In the most widely read book on Hmong people The Spirit Catches You and You Fall Down, which chronicles a Hmong family's struggles with the US healthcare system, Anne Fadiman draws a parallel between Simpson and the historical Chinese government, which also sought to assimilate the Hmong ethnic minority among them. "...[Simpson] sounded much like the authorities in China long ago who were grievously insulted when the Hmong refused to speak Chinese or eat with chopsticks." Simpson visited Ban Vinai for one day during his tenure on the immigration subcommittee.