Former Idaho Gov. and U.S. Interior Secretary Dirk Kempthorne has died at age 74, his family said in a written statement Saturday.

Kempthorne died Friday evening in Boise, the statement said. No cause was given. He had been diagnosed with colon cancer last year.

“Beyond his public service, he was a devoted husband, father, and grandfather whose greatest joy came from time spent with family and the people he met along the way,” his family said. “He had a rare gift for truly seeing others — remembering names, stories, and the small details that made each person feel known and valued.”

Kempthorne, a moderate Republican, was elected mayor of Boise in 1985 at age 34, and he was credited with revitalizing the downtown by securing an agreement to build a convention center and promoting other development. He served seven years before winning the U.S. Senate seat vacated by Sen. Steve Symms in 1992.

During his time in Washington, he authored legislation — signed by Democratic President Bill Clinton — to end unfunded federal mandates on state and local governments.

Rather than run for reelection in 1998, he entered an open election for governor, trouncing his Democratic opponent by garnering more than two-thirds of the vote.

President George W. Bush appointed him Interior secretary in 2006, a position he held until the end of Bush's presidency — and during which he lived on a houseboat docked in the Potomac River.

“Dirk was one of the finest public servants I ever knew because he was one of the finest men,” former President George W. Bush said in a written statement Saturday. “He was considerate, smart, and capable. Dirk loved our lands and waters, and as Secretary of the Interior, he was an effective steward of our natural resources.”

He protected polar bears

Environmentalists often found Kempthorne too accommodating to industry, citing his efforts to push oil and gas development in the Gulf of Mexico and off Alaska. More than 100 conservation groups opposed his nomination as Interior secretary, saying that as a senator he had voted to eliminate federal money for recovery of the endangered wolf, to open the Arctic National Wildlife Refuge to oil and gas exploration, and to sell off federal public lands.

Yet in 2008, he bucked other advisers in the White House by insisting that the polar bear should be listed as a threatened species under the Endangered Species Act because of the loss of sea ice in the Arctic. He was prepared to resign over it when Bush decided to back him.

“As Governor, Dirk left an enduring mark on our state," Idaho Gov. Brad Little said in a written statement. With the partnership of his wife, Patricia, Kempthorne “championed children and families, strengthened public education, and led transformational investments in our transportation system that will benefit Idahoans for generations.”

After leaving the federal government, he became the chief executive of a trade association of life insurance companies.

In a 2023 question-and-answer session with the George W. Bush Presidential Center, Kempthorne recalled helping evacuate nearly 400 U.S. citizens and Afghan allies from Afghanistan two years earlier, as many were being sought by the Taliban following the U.S. military's chaotic withdrawal. Kemthorne and others worked frantically for months to raise money and garner the support of diplomatic channels to charter buses and an Airbus A340 to help resettle the evacuees in the U.S. and Canada.

He helped Afghan refugees

At one point, with the flight fully booked, the organizers received a list of more people who needed to leave urgently.

“That night, at a total loss for answers, alone, I knelt in prayer,” Kempthorne recalled. “I said, ‘Dear God, we cannot leave these people behind, please give a path forward.’ ”

He said he then had a vision of Mother Mary holding the infant Jesus. It gave him an idea: The babies on the flight didn't need their own seats, as their parents could hold them. The organizers confirmed that with the airline and were able to add an additional 50 people to the flight, Kempthorne said.

Kempthorne was born in San Diego and grew up in Spokane, Washington. His father was a regional representative for Maytag, the appliance company. His mother, a homemaker, once worked as a secretary for the Legislature in Nebraska, her home state.

Kempthorne attended San Bernardino Valley College in California before transferring to the University of Idaho, where he served as student body president and met his future wife, Patricia. After graduation he worked as executive assistant to the director of the Idaho Department of Lands before joining the Idaho Home Builders Association as the executive vice president.

Kempthorne is survived by his wife, as well as their children Heather and Jeff and their families.

___

Johnson reported from Seattle.

Keep Reading

U.S. Rep. David Scott died overnight at the age of 80. (Jenni Girtman for the AJC 2025)

Credit: Jenni Girtman

Featured

A burned trailer sits near a destroyed home as the Brantley Highway 82 fire burns on Thursday, April 23, 2026, near Nahunta. (Mike Stewart/AP)

Credit: AP