Jon Kyl, Arizona Senator Who Shaped Western Water Policy, Dies at 84

Former U.S. Sen. Jon Kyl, a Republican from Arizona whose nearly three-decade congressional career left a lasting mark on Western water policy, died Wednesday night from a neurological disorder. He was 84.

Kyl had stepped away from public life in December 2025 after disclosing that he had been diagnosed with dementia. His death was confirmed by Gordon James, a communications professional and longtime friend of the Kyl family.

First elected to the House in 1987, Kyl served four terms there before moving to the Senate, where he rose to minority whip during his final full term. His time in Washington spanned the presidencies of Ronald Reagan through Donald Trump's first term, and he witnessed significant shifts within his party along the way.

Before entering Congress, Kyl helped shape Arizona's 1980 groundwater code as a lawyer for a large water utility. The first-of-its-kind framework established rules for managing groundwater in the drought-prone state, focused largely on population centers such as Phoenix and Tucson.

In 2004, he authored legislation that produced one of the largest tribal water rights settlements in U.S. history, securing for the Gila River Indian Community enough water annually to fill nearly 313,500 Olympic-sized swimming pools. Sen. Mitch McConnell of Kentucky later described Kyl's work ethic as "legendary," noting he had labored behind the scenes for 15 years to advance the settlement.

Arizona State University's Kyl Center for Water Policy bears his name. Its director, Sarah Porter, said Kyl approached water policy practically and thought about the needs of future generations.

After retiring from politics in 2013, Kyl worked as a lobbyist and helped guide the confirmation of Supreme Court Justice Brett Kavanaugh. In 2018, then-Gov. Doug Ducey appointed him to fill the Senate vacancy left by the late John McCain. Kyl served less than four months before returning to his lobbying firm.

Ducey, who considered Kyl a mentor, called him a true statesman and a "workhorse" among Washington's "showhorses." He said Kyl's biggest impacts included holding the Republican caucus together in opposition to Obamacare and his strong support of Israel.

Kyl also backed legislation authorizing construction of a fence along hundreds of miles of the U.S.-Mexico border, and later joined Democrats in supporting a bill offering a path to citizenship and temporary guest-worker status for unauthorized immigrants. That proposal ultimately failed.

Born in Oakland, Nebraska, on April 25, 1942, Kyl grew up in a rural Iowa farming district his father represented in the House. He moved to Arizona at 18 to attend the University of Arizona, where he met his wife, Caryll, and earned a law degree.

In announcing his dementia diagnosis, Kyl invoked Reagan's words when the former president revealed his own Alzheimer's diagnosis. Kyl said he shared Reagan's confidence in the future of Arizona and the nation, and described himself as a "very fortunate man."