Mr. Jordan and the five other House Republicans that signed the letter accused CalPERS of potentially acting as a "cartel" by coordinating with Ceres and Climate Action 100+, a related non-profit, to push major companies to reduce greenhouse gas emissions. The committee has not detailed any specific antitrust allegations and did not return multiple requests for comment.
Mr. Myers said CalPERS disagrees with the committee's accusations and plans to finish the document handover soon. Ms. Simpson, who is now head of sustainability for Franklin Templeton, did not return a request for comment.
The pension fund is part of a handful of companies, institutional investors and non-profits that are the subject of increasing attacks from Republicans in Congress over environmental, social and governance investing. In July, Mr. Jordan's committee demanded documents from BlackRock, Vanguard Group and State Street alleging "potentially harmful effects on Americans' freedom and economic well-being."
Boston-based Ceres is complying with the Judiciary Committee's subpoena and has provided thousands of pages of documents, spokesperson Helen Booth-Tobin said. The organization has denied violating antitrust laws, saying companies are taking their shareholders' financial interests into account by factoring in climate change risks.
"There is nothing anti-competitive about investors or companies, each having independently identified a fiduciary threat, working together to address a common challenge," Ms. Booth-Tobin said.