Orrin G. Hatch, the longest-serving Republican senator in history who was a fixture in Utah politics for more than four decades, died Saturday at age 88.

His death was announced in a statement from his foundation, which did not specify a cause.

A staunch conservative on most economic and social issues, he also teamed with Democrats several times during his long career on issues ranging from stem cell research to rights for people with disabilities to expanding children’s health insurance.

He also formed friendships across the aisle, particularly with the late Democratic Sen. Edward M. Kennedy.

Hatch also championed GOP issues like abortion limits and helped shape the US Supreme Court, including defending Justice Clarence Thomas against sexual harassment allegations during confirmation hearings.

He later became an ally of Republican President Donald Trump, using his role as chairman of the powerful Senate Finance Committee to get a major rewrite of the US tax codes to the president’s desk.

In return, Trump helped Hatch deliver on a key issue for Republicans in Utah with a contentious move to drastically downsize two national monuments that had been declared by past presidents.

Hatch retired in 2019. Through Trump had encouraged him to run again, the longtime senator would have faced a tough primary battle and had promised to retire.

Hatch instead stepped aside and encouraged Republican Mitt Romney, a critic of the former president, to run to replace him.

“Few men have made their mark on the Senate as he did,” Romney wrote in a tribute to his friend and predecessor, praising his “vision and legislative accomplishment.” Utah's Sen. Mike Lee, for his part, called Hatch “a friend, a mentor and an example to me and countless others.”

Senate Minority leader Mitch McConnell, a Republican from Kentucky, praised Hatch's legislative acumen.

"Orrin’s decades of leadership drove an unending catalog of major legislative accomplishments and landmark confirmations," McConnell said in a statement. "He entered the Senate as a young principled conservative in the 1970s when the modern conservative movement was in its infancy. He held to his principles his whole career, and applied them to issues like the historic 2017 tax reform law and the work of the Judiciary Committee to the enormous benefit of our country."

Hatch was also noted for his side career as a singer and recording artist of music with themes of his religious faith, The Church of Jesus Christ of Latter-day Saints.

He is survived by his wife, Elaine, and their six children.

Hatch came to the Senate after a 1976 election win and went onto become the longest-serving senator in Utah history, winning a seventh term in 2012. He became the Senate president pro tempore in 2015 when Republicans took control of the Senate.

The position made him third in the line of presidential succession behind then-Vice President Joe Biden and the Speaker of the House. His tenure places him as the longest GOP senator, behind several Democrats.

One issue Hatch returned to over the course of his career was limiting or outlawing abortion, a position that put him at the center of one of the nation's most controversial issues. He was the author of a variety of “Hatch amendments” to the Constitution aimed at diminishing the availability of abortions.

In 1991, he became known as one of Thomas's most vocal defenders against sexual harassment allegations from law professor Anita Hill. Hatch read aloud at the confirmation hearings from “The Exorcist,” and he suggested that Hill stole details from the book.

While unquestionably conservative, there were times Hatch differed from many of his conservative colleagues — including then-President George W. Bush when Hatch pushed for federal funding of embryonic stem cell research.

In 1997, Hatch joined Kennedy in sponsoring a $24 billion program for states to provide health insurance to the children of low-income parents who don’t qualify for Medicaid.

“He exemplified a generation of lawmakers brought up on the principles of comity and compromise, and he embodied those principles better than anyone,” said Hatch Foundation chairman A. Scott Anderson in a statement. “In a nation divided, Orrin Hatch helped show us a better way by forging meaningful friendships on both sides of the aisle. Today, more than ever, we would do well to follow his example.”

Hatch also helped usher through legislation toughening child pornography laws and making illegally downloading music a prosecutable crime.

For Hatch, the music-download issue was a personal one. A member of the faith widely known as Mormon, he frequently wrote religious songs and recorded music in his spare time as a way to relax from the stresses of life in Washington. Hatch earned about $39,000 in royalties from his songs in 2005.

One of his songs, “Unspoken,” went platinum after appearing on “WOW Hits 2005,” a compilation of Christian pop music.

In 2000, Hatch sought the Republican nomination for president, saying he had more experience in Washington than his opponents and that he could work with Democrats.

Hatch readily acknowledged that winning would be a long shot. He withdrew from the race after only winning 1 percent of the vote in the Iowa caucuses and then endorsed George W. Bush.

He became a strong opponent of President Barack Obama’s 2009 health care law after pulling out of early bipartisan talks on the legislation. At one point, he said of the legislation: “It is 2,074 pages long. It is enough to make you barf.”

Hatch faced a tough re-election battle from a conservative candidate in 2012, two years after a tea party wave carried longtime Utah Republican Sen. Bob Bennett out of office. Both Bennett and Hatch voted in favor of a 2008 bank bailout that rankled those on the far right.

Hatch poured about $10 million into his 2012 race and worked to build support among tea party conservatives.

Hatch was used to playing tough — he learned to box as a child in Pittsburgh to fend off the attacks of older, larger students. Unafraid to fight, he said he always made a point to quickly become friends with those he had arguments with.

When Hatch announced he would not seek re-election in 2018, he said “every good fighter knows when to hang up the gloves.”

After moving to Utah in the early 1970s, Hatch — a former bishop in The Church of Jesus Christ of Latter-day Saints — ran for his first public office in 1976 and narrowly upset Democratic Sen. Frank Moss.

In 1982, he held off challenger Ted Wilson, the Democratic mayor of Salt Lake City, to win a second term by a solid margin.

He was never seriously challenged again.

Orrin Grant Hatch was born in 1934 in Pittsburgh, to a carpenter and plaster lather. He married Elaine Hanson in 1957 and graduated from Brigham Young University in 1959.

He received a law degree from the University of Pittsburgh in 1962 and was a partner in the law firm of Thomson, Rhodes and Grigsby in that city until 1969. Later, he was a partner in the Salt Lake City firm of Hatch & Plumb.

His six children are Brent, Marcia, Scott, Kimberly, Alysa and Jess.