(Bloomberg) -- House Judiciary Chairman Jim Jordan and two other House Republicans fired off letters to financial industry giants including BlackRock Inc., Vanguard Group Inc., and State Street, contending that their efforts to combat climate change could violate US antitrust law.

The lawmakers warned in the letters on Thursday that agreements to decarbonize their assets “and reduce emissions to zero” could have “potentially harmful effects on Americans’ freedom and economic well-being.”

Jordan, Representative Thomas Massie of Kentucky and Representative Dan Bishop of North Carolina signed the letters, which ask for “relevant documents and information” to be produced within two weeks.

Companies that follow environmental, social and governance investing, or ESG, principles have come under increasing attack from Republicans on Capitol Hill as well as candidates seeking the GOP presidential nomination.

Florida Governor Ron DeSantis, for example, earlier this year signed legislation that restricts his state’s pension funds from investing based on ESG factors.

The letters highlight the widening schism between much of the modern GOP and Wall Street, long a traditional ally.

The Republican lawmakers also sought information from the Glasgow Financial Alliance for Net Zero and its Net Zero Asset Managers initiative. GFANZ is co-chaired by former Bank of England Governor Mark Carney and Michael R. Bloomberg, the founder of Bloomberg News parent Bloomberg LP.

BlackRock said in a statement that its “sole focus as a fiduciary is seeking the best financial outcomes for our clients, consistent with their investment objectives. We look forward to engaging with the committee on how we do that.”

Vanguard spokesperson Emily Farrell said the company looks forward to “reviewing and responding” to the committee’s request. 

“As an asset manager owned by the investors in our funds, our unique, independent approach is focused on helping everyday retail investors achieve their long-term financial goals,” Farrell said in a Friday statement. 

Randall Jensen, spokesman at State Street, said the firm assesses and votes on shareholder proposals based on what’s in clients’ best long-term interests.

“Our actions and decision-making are guided by research, expert analysis and our fiduciary duty to clients,” Jensen said.

--With assistance from Silla Brush.

(Updates with State Street statement starting in 11th paragraph)

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