But in an interview Saturday after an event in Gettysburg, Pennsylvania, that focused on ways to depolarize U.S. politics, Mr. Cox struck a more conciliatory tone. While he remains opposed to environmental, social and governance financing principles, Mr. Cox said he's spoken with groups in Utah interested in ESG topics such as solar energy and encouraged them to take their issues to the legislature where they can be debated and worked on outside of the finance industry.
"We can either get a change of heart from politicians who are exploiting ESG or citizens can insist on finding better politicians who are willing to listen to each other and strive to work together," Mr. Cox said after his speech at the Gettysburg event organized by a group called Braver Angels and attended by supporters of Donald Trump and backers of the Black Lives Matters movement.
ESG investing has been swept into the nation's culture wars by GOP officials, and congressional Republicans are planning a series of hearings this month that focus on the investing strategy. Mr. Cox's comments come as a few others, mainly on the left, try to defuse the rhetoric over ESG.
Vermont State Treasurer Mike Pieciak, a Democrat who said he's worked under a GOP governor and that his father is a Republican, encouraged attendees at a conference in Boston last month to break partisan divides through their relationships and conversations. "It's important to break through the political walls," he said at the event.
At an ESG event in New York last month, Paul O'Brien, a trustee and member of the Republican-controlled state of Wyoming's retirement system, concurred. He made clear, however, that his comments represent his personal views rather than those of the pension fund.
"Those of us out here in red states tend to stay in our bubbles, and I suspect some of you out there in blue-state America stay in your bubbles as well," Mr. O'Brien said. "I would encourage you to come out here and talk to people and get a complete view."
After the event, he said the anti-ESG backlash has in fact been a good thing because it will lead to more constructive debates. He said ESG proponents need to be more cognizant of how the switch to cleaner energy will impact local economies that have traditionally relied on fossil fuels.
"When you make a simple net zero statement, it doesn't sound very good to the people that are producing fossil fuels because it looks like they're being zeroed out," he said.
Since the ESG criticisms started brewing last year, former Harvard University professor Bob Eccles, a Democrat, has been meeting with Republicans to better explain what the investing strategy is. At the Boston conference, he urged the overwhelmingly Democratic audience to reach across the political aisle.
"Start making friends with Republicans," said Mr. Eccles, who's now a visiting professor at Oxford University's Said Business School.