Republican members of the Senate cautioned attorneys to “preserve relevant documents” as lawmakers float antitrust investigations regarding the environmental, social, and governance movement, also known as ESG.

A letter, spearheaded by Sen. Tom Cotton (R-AR), told more than four dozen law firms to warn corporate clients about “the risks they incur by participating in climate cartels and other ill-advised ESG schemes,” referencing the fact that FTC Commissioner Lina Khan recently said during a hearing that there is no “ESG exemption” to antitrust laws.

“The ESG movement attempts to weaponize corporations to reshape society in ways that Americans would never endorse at the ballot box,” the letter stated. “Of particular concern is the collusive effort to restrict the supply of coal, oil, and gas, which is driving up energy costs across the globe and empowering America’s adversaries abroad.”